Don't make efforts that don't need to be made.
The art of prioritizing to achieve maximum results with minimal effort

A must-read for hard workers who want to work more efficiently and achieve higher performance, "How to Reduce 80% of Work" has been published by Purunsup Publishing.
This book presents a revolutionary solution that can reduce work by 80%.
The author never argues that we are lacking or incompetent, but rather that we have too much work to do. He teaches us, step by step, the techniques of selection and concentration that will allow us to achieve the best results within a given time with extreme efficiency.
Ultimately, work management is about using limited time efficiently.
When you choose what not to do, it becomes clear what to do.
After reading this book, you will be able to achieve maximum efficiency without wasting time or effort on useless things.

At some point, I made a drastic change to how I worked, and not only did my time change, but my life changed 180 degrees.
That's because I learned that 'there's no need to work hard to do everything perfectly on your own.'
"Huh? You're saying I'm not working hard?" Some of you might be taken aback by my words and ask, but this shift in mindset has completely transformed my life.
--- p.12, from the prologue

Until now, I've worked with the motto of "working hard, putting in the effort, putting in the effort," and "working with passion and perseverance." However, what the company required was a "work style that aims to achieve results within a set timeframe."
To fulfill my role, I had to immediately and fundamentally change my way of working and thinking.

--- p.13, from the prologue

However, when I moved to a foreign company, I felt deeply that the old way of working hard and long hours wouldn't work.
Because we were required to deliver results within regular business hours.
To fulfill my role, I needed to fundamentally rethink my work methods and mindset up until then.
As a result, what I realized was that I needed to let go of my 'obsession with perfection.'
That way, I could use the time given to me meaningfully without overexerting myself.

--- p.29, 「1.
From “The mindset that reduces work by 80%”

The thing to keep in mind is the premise that 'if it's not important, don't do it.'
Here, 'important matter' means 'something of great importance or seriousness', 'something of great influence'.
In other words, think of it as 'excluding anything that is not absolutely necessary'.
People who are good at managing work are not necessarily those who have excellent ability to drive things forward.
He is a person who is good at distinguishing between things he 'must do' and things he 'doesn't have to do'.
They pour all their energy into what they want to do and what they have to do, but they don't care about anything else.

--- p.37, 「1.
A mindset that reduces work by 80%

I really hope you all will make this attitude of prioritizing speed your own.
Think of the 'performance value of work' as 'quality of work ÷ time required'.
This means that not only is quality important through flawless work execution, but 'time required' is also important.
Some people might think, 'Then how is this different from doing work roughly (lowering the level of completion)?' But that is not the case at all.
It's not about 'doing things half-heartedly', it's about maintaining the quality of the work required and delivering results as quickly as possible.
The idea is to present what the person requesting the work to you as quickly as possible, in the bare minimum possible form, and then leave it up to the client to decide whether to pass it as is or revise it.
Then, you may realize that you've been taking your work too seriously, and you'll be less likely to get caught up in unnecessary emotions.

--- pp.41-42, 「1.
A mindset that reduces work by 80%

Many people struggle with poor work management, but the root of their problems isn't actually a problem with their work management methods, but simply because they have too much work to do.
Basically, only do critical tasks, that is, tasks that will cause major problems if not done, and that cannot be fixed after the fact.
But before that, there are some countermeasures worth trying.
This is the task of creating a list of things not to do, as introduced in the introduction.
By making this list, you can help yourself narrow down your to-do list.
You don't have to be completely immersed in everything you do.

--- p.54, 「2.
Make a list of things not to do

A characteristic of people who do not respond quickly is that they tend to focus on themselves rather than the other person.
For example, the other party may want a quick response, even if it's just an overview, rather than detailed information like the boss in the example above.
However, people who do not respond immediately prioritize what they want to say, such as being organized and polished, over what the other person wants.
--- pp.71-72, 「3.
How to keep things flowing without stopping

Everyone plans and establishes order and procedures in their daily lives.
However, during this process, it is very important to ask yourself, 'Do I really need this act of preparation?'
If you get stuck in the mindset of 'I'll prepare from ○○ and then start,' you can easily fall into the trap of thinking that you can't start if you're not prepared.
As a result, important tasks that really need to be done are delayed.
--- p.74, 「3.
How to keep things flowing without stopping

If you aim for 70% completion and make an effective presentation, you will ultimately achieve better results than if you aim for 100% completion.
If you recognize that you have perfectionist tendencies, try aiming for an appropriate level that the other person will accept.
That level is roughly a 70 point completion rate.
Rather than aiming for perfection, it is important to aim for a 'reasonable 70 points' and focus on 'making progress on the task' by moving your body.
--- p.79, 「3.
How to keep things flowing without stopping

In fact, when there is a partner, the level of acceptance is more important than the level of satisfaction.
To put it extremely, even if you evaluate yourself as having a score of '20', if the other person agrees with it, that is enough and it is a passing grade.
--- p.80, 「3.
How to keep things flowing without stopping

Of all the people I've met who are highly capable and know the ropes of work, there's one thing they all have in common.
It means not holding on to the work you need to do or the work you have been asked to do by others (called a 'ball') but passing it on immediately.
That is, instead of keeping the ball in your hand, you quickly pass it to the next person.
This will make the overall workflow smoother.
--- p.83, 「3.
How to keep things flowing without stopping

When making plans for anything, people seem to unconsciously harbor somewhat unrealistic expectations of 'hoping it will turn out this way'.
But actually, if you think about it as a natural occurrence, it helps things run much more smoothly.
--- p.210, 「7.
There's no reason to panic if things don't go as planned.

This 'free time' can be transformed into a special time that you can use freely, depending on your mindset.
I often do this exercise in my work and time management training.
If you have a limited amount of time, such as 3 or 10 minutes, think about what you will do with that time.
If you plan out your to-do list in advance, you can do it right away when you have some spare time without having to worry about what to do.

--- p.256, 「9.
How to Use Your Scrap Time to Make a Big Difference

What we should truly pursue is not simply outstanding work ability, but 'our own wise choices.'
It's a choice about what to prioritize and what to discard.

--- p.287, from the epilogue