Instead, ask the more essential question that will inform every future decision you will ever make: “If we could be truly excellent at only one thing, what would it be?

if there’s one thing you are passionate about — and that you can be best at — you should do just that one thing.

Be the best at what you do or the only one doing it.

I don’t believe in doing everything and being mediocre at all of them. I believe in being good at one thing.

It is never challenging when you only do one thing in life. It is difficult to do everything, but if you specialise in one thing, you can focus with your head bent over one single thing the whole day and you have less likelihood of getting things wrong.

You need focus to become exceptional at anything.

Massive amounts of time and energy are wasted optimizing things that should be left undone.

You have to be great at saying no.

Success demands singleness of purpose.

You need to be doing fewer things for more effect instead of doing more things with side effects.

It is those who concentrate on but one thing at a time who advance in this world.

Passion for something leads to disproportionate time practicing or working at it. That time spent eventually translates to skill, and when skill improves, results improve. Better results generally lead to more enjoyment, and more passion and more time is invested. It can be a virtuous cycle all the way to extraordinary results.

The ONE Thing shows up time and again in the lives of the successful because it’s a fundamental truth.

More than anything else, expertise tracks with hours invested.

The pursuit of mastery bears gifts.

When people look back on their lives, it is the things they have not done that generate the greatest regret...People’s actions may be troublesome initially; it is their inactions that plague them most with long-term feelings of regret.

Make sure every day you do what matters most. When you know what matters most, everything makes sense. When you don’t know what matters most, anything makes sense.

Be a monomaniac on a mission to be truly great at something difficult. Pick one thing and spend the rest of your life getting deeper into it.

Pick one, and only one, new skill you wish to acquire. Put all of your spare focus and energy into acquiring that skill, and place other skills on temporary hold.

We only do well the things we like doing.

You can only become great at something you are willing to sacrifice for

Focus on what you are good at; delegate all else.

If you really want to be great at something you have to truly care about it. If you want to be great in a particular area, you have to obsess over it.

by focusing deeply on just one important thing at a time — hyperfocusing — we become the most productive version of ourselves.