What starts as an excuse can easily become a habit. Don't let a bad day become a lifestyle. - James Clear

When you need to learn quickly, learn from others.

When you need to learn deeply, learn from experience.

The reason people get good ideas in the shower is because it's the only time during the day when most people are away from screens long enough to think clearly. The lesson is not to take more showers, but rather to make more time to think.

I think about decisions in three ways: hats, haircuts, and tattoos.

Most decisions are like hats. Try one and if you don't like it, put it back and try another. The cost of a mistake is low, so move quickly and try a bunch of hats.

Some decisions are like haircuts. You can fix a bad one, but it won't be quick and you might feel foolish for awhile. That said, don't be scared of a bad haircut. Trying something new is usually a risk worth taking. If it doesn't work out, by this time next year you will have moved on and so will everyone else.

A few decisions are like tattoos. Once you make them, you have to live with them. Some mistakes are irreversible. Maybe you'll move on for a moment, but then you'll glance in the mirror and be reminded of that choice all over again. Even years later, the decision leaves a mark. When you're dealing with an irreversible choice, move slowly and think carefully.