Completing One Shadowing Book in 58 Days: Where I Arrived with 15 Minutes Every Morning

On July 19, 2026, I finished one shadowing textbook from start to finish.

The book is "Shadowing to Build an English Ear in 3 Months, Revised 2nd Edition" by Keiko Taniguchi, a TOEIC listening perfect-score coach. It took me 58 days, starting from May 23, to graduate from all 12 lessons. I worked steadily every morning for 15 or 16 minutes. It is a sense of accomplishment I haven't felt in a long time.

Today, I would like to look back on those 58 days from the beginning. I have written several articles along the way, but I want to connect them into a single thread and summarize my journey. It will be a bit long, but I would be happy if you could stay with me.

15 minutes a day, stop even if you want to continue

The first thing I decided was to limit my daily study time to 15 minutes.

When I decided to start shadowing, the thing I feared most was giving up. I have failed many times before by getting enthusiastic, working for long hours, and burning out in a few days. So this time, I decided to do the opposite. Stop at 15 minutes even if I want to continue. Decide on the upper limit in advance. I told myself that feeling like it wasn't enough was just right.

A few days after starting, I realized that this was harder than I had imagined. I had a feeling, mixed with expectation, that I would improve if I kept going. But more than that, I learned through my own body how high the burden of the practice of shadowing itself is.

And there was one more surprise. The steps required before starting full-scale shadowing were more numerous than I had imagined. Taniguchi's method consists of seven steps: listening, dictation, silent reading for comprehension, reading aloud, repeating, overlapping, and finally, shadowing. If you don't follow this order and just play the audio and move your mouth vaguely, it will only be a half-baked practice. I realized for the first time after trying it that these steps, which seemed tedious, were actually the shortcut. There are no shortcuts. You just have to work at it steadily. In the first few days, I made up my mind to do that.

The discovery of reduction

On the 7th day, I had my first major realization: the presence of reduction.

There are quite a lot of parts in English sounds that are not actually pronounced. I knew this as a piece of knowledge. But knowing it and experiencing it during practice are completely different things.

If you listen without knowing that sounds are dropped, it feels like the sound suddenly cuts off. That creates a sense of discomfort, and that discomfort stops the listening. Conversely, if you are prepared that "sounds are dropped here," you can continue to be bathed in the sound without feeling that discomfort. Whether or not you have this premise changes how you hear things entirely.

I also realized that reduction is key when trying to keep up with native speed during overlapping. Trying hard to pronounce every single sound is actually what causes you to slow down. If you move your mouth with the premise that there are sounds that are not pronounced, you can finally keep up.

At this time, I was viewing reduction as a problem of the "ear." I couldn't keep up because I couldn't hear it. Therefore, it is important to know the sounds that are dropped. This understanding was not wrong, but I would later learn that it was only the entrance.

Day 30, the feeling of "becoming a speaker"

I continued while keeping to 15 minutes, and 30 days passed.

Honestly, the strongest feeling I had at this time was a sense of appreciation for myself for "keeping it up so well." Although I had intended to gradually increase the time, I ended up staying at 15 minutes. The reasons were that I was afraid of the burden becoming too great to continue, and it was difficult to actually set aside more time. At first, it felt like a compromise, but after finishing 30 days, I realized that this 15-minute limit was the main reason I was able to continue. Because it is short, I can face the desk every day. Stopping even when I wanted to continue was just right.

By this time, a cycle of completing one assignment every four days had become established. The criteria for graduation were to be able to shadow without looking at the text and to be able to say everything about two seconds after the audio.

And on the 30th day, I had another major realization. I had vaguely grasped something like the knack for shadowing.

Saying the English you hear out loud exactly as it is. It sounds simple when put into words, but this is surprisingly difficult. At first, rather than pronouncing the sounds I heard, I had a strong feeling that I was using the heard sounds as a hint to recall the English sentences I had memorized while speaking. What was coming out of my mouth was not the "sounds I heard" but the "content I had memorized."

However, there comes a moment when you transcend that phase. When I focus solely on listening, my mouth moves on its own, as if the words I hear are being spoken immediately. It feels as though I have become a speaker that copies and emits the sounds. In that state, English flows out of my mouth very smoothly and fluidly. I suspect that the sounds I hear and the sounds I am producing are becoming much closer. Realizing this sensation was a major step forward.

Trying to add just one minute

At the 30-day mark, I increased my time for the first time. From July 4th, I went from 15 minutes to 16 minutes.

It is only one minute. But for me, it was a small decision. I knew that if I suddenly doubled the time, I wouldn't be able to keep it up. So, I started with just one minute. I believe this caution was something I could only possess because I had successfully stuck to 15 minutes for 30 days.

Triggered by this one minute, several changes occurred in the following week. On July 6th, I graduated from practice09, marking the end of the meeting-themed assignments that had continued for a while. The next topic changed to presentations. Meetings involve a lot of back-and-forth, while presentations involve speaking alone; the phrasing and pacing are completely different, so I was able to approach it with a fresh mindset.

When I entered the presentation section, each audio clip was about 10 seconds longer than before. Even just 10 seconds makes a huge difference in the physical sensation of shadowing. Still, the reason I was able to continue without giving up might be that the 16-minute duration was more effective than I thought.

Around this time, I felt definite progress regarding reductions. On the 7th day, I wrote that I still didn't know where they were happening, but now, even if words like the relative pronoun 'that' or prepositions were dropped in the sound, I began to notice, 'Ah, this part was reduced.' I had a sense that my ears were gradually starting to sort out the heavy words that support the meaning of the sentence from the light words that are easily dropped.

My first '3-day graduation' and the sense of exhilaration

On July 9th, I completed practice10. What surprised me was that I was able to graduate in just 3 days this time. Since it had taken 4 days until now, 3 days was a first. Was it because I had gained strength, was the text easier, or was it the effect of adding one minute? I cannot isolate the cause. Still, I was genuinely happy.

This textbook has a space to write the 'graduation' date for each assignment. I filled in '7/9'. The sense of exhilaration at the moment of writing this date is indescribable. A record of a small achievement becomes fuel for the next one. I felt it was really well-designed as a mechanism for keeping going. I don't know how much this small reward helped the practice I had been doing so calmly.

Stagnation. And the issue of 'familiarity' rather than 'ears'

Just when I thought I was making steady progress, I hit a complete wall with practice11.

I can usually graduate in 4 days, but even after 5 days, I wasn't finished. I finally graduated on July 15th; it took a staggering 6 days. Right after graduating in 3 days, I experienced my longest stagnation ever. I was surprised by this drop myself.

But because things weren't going well, I was able to see something new.

There were two reasons for the stumble. One was simply that the sentences were long. In shadowing, if you fall slightly behind in the first half, you can't catch up in the second half, and you gradually get left further behind. The longer the sentence, the bigger that snowball becomes. The other was the relative adverb 'where'.

What was surprising to me here was that when I checked the text, it wasn't that I couldn't hear the sounds. The sounds were reaching me clearly. Yet, my mouth wouldn't move. Thinking about the reason, I realized it was because I wasn't used to this word order or the placement of the words. Because I wasn't used to it, the next word wouldn't come out.

This was a pretty big discovery for me. The reduction issue on the 7th day was a problem of the 'ears.' I couldn't keep up because I couldn't hear it. But this time with 'where,' it was different. I could hear it. Yet, my mouth stopped.

In other words, when I was speaking smoothly during shadowing, it seemed like I was just repeating the sounds I heard, but in reality, I was unconsciously predicting the next words in advance. If the sentence structure allows for prediction, it comes out of my mouth smoothly. If the structure doesn't allow for prediction, I can't keep up even if the sounds reach me. I wrote on the 30th day about the 'feeling of becoming a speaker,' but that speaker wasn't just reflecting sounds; it was speaking while reading ahead. That was what it was.

If that's the case, what I need when I get stuck on 'where' is not to listen more intently. It is to increase the number of times I encounter that sentence structure. Here again, I returned to the same conclusion: there are no shortcuts.

'Being able to say' and 'being able to use' were different things

When I finally graduated from Practice 11 after six days, I had another honest realization.

I met the graduation criteria. I could finish saying the sentence two seconds after the audio. But that 'where' was still a shaky passage. At the very least, I don't have the confidence to use 'where' when I build English sentences from scratch myself.

This might have been the deepest insight I touched upon throughout the series. What you can say through shadowing and what you can use yourself are two different things. If I'm guided by the audio, my mouth moves. I can keep up. But if you ask me if I can build it from a blank slate, there is still a distance there.

Shadowing is excellent for training the 'ability to process incoming English.' It's the ability to listen, follow, and move your mouth. But I think the 'ability to build English from scratch' requires different training. Receiving and sending seem like they are on the same path, but there is a river flowing between them. I realized that just as I was about to graduate.

And the last one, on to graduation

On July 16, I finally started the last one, Practice 12.

The listening on the first day felt surprisingly easy. I don't know if it was made easier because it was the last one, if I had improved, or if it just happened to be a topic I was familiar with. I don't know the reason. But perhaps this is also connected to that discovery about 'where.' When you are familiar with the content, it becomes easier to predict what comes next. The reason familiar topics are easier to listen to is likely not because my ears got better, but because my brain is reading ahead.

And on July 19, I graduated from Practice 12. It was the last one.

Looking at the records, it has been 58 days since I started on May 23. 15 minutes every morning, and 16 minutes from halfway through. I never doubled the time, I didn't lower the graduation standards even in weeks that didn't go well, and I accepted that if it took more days, it took more days. The weeks I graduated in three days and the weeks that took six days were both 16 minutes.

Looking back on the 58 days

Looking back like this, I realize that there was a consistent thread running through these 58 days.

At first, it was the discovery of 'reduction, or the problem of the ears.' Next was the 'feeling of becoming a speaker where my mouth copies the sounds I hear.' And when I stumbled on Practice 11, I reached an even deeper realization: 'I can hear the sounds, but my mouth stops; this isn't a problem with my ears, but a problem of getting used to syntax.' Finally, I reached the point of seeing that 'what you can say through shadowing and what you can use yourself are different.'

Rather than just finishing one book, I think these 58 days were about unraveling the mechanism of how English is heard and spoken, step by step, with my own body. And what supported all of that was the small 15 or 16-minute frame every morning. I continued because I limited it. I reached my goal because I didn't look for shortcuts.

By the time I neared the end of the 12 tasks in the material, I had already started looking for the next one. It seems I can pick up additional materials from the links in the text, so I intend to continue with those. At the same time, wanting a change of pace, I bought Z-Kai's Basic 2400. Of course, it's material where I can listen to the audio. I really relied on Z-Kai when I was a student preparing for exams, and I remember my grades improving significantly back then. Perhaps that's why I have a groundless expectation that if I do this, I will improve again. I didn't think past success experiences would have such an effect on choosing study materials.

Having finished one book, some things have become clear. I still have the next challenge remaining: 'English I can use myself.' That feeling of shakily passing the 'where' taught me that. But that's fine. By finishing one book, I saw concretely what I was lacking. That is something I couldn't see before I started.

First, I want to fully savor this sense of accomplishment. And tomorrow, I will start again from 16 minutes.

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