Breakthrough moments are often the result of many previous actions, which build up the potential required to unleash a major change. This pattern shows up everywhere. Cancer spends 80 percent of its life undetectable, then takes over the body in months. Bamboo can barely be seen for the first five years as it builds extensive root systems underground before exploding ninety feet into the air within six weeks. Similarly, habits often appear to make no difference until you cross a critical threshold and unlock a new level of performance. In the early and middle stages of any quest, there is often a Valley of Disappointment. You expect to make progress in a linear fashion and it’s frustrating how ineffective changes can seem during the first days, weeks, and even months. It doesn’t feel like you are going anywhere. It’s a hallmark of any compounding process: the most powerful outcomes

Sometimes a habit will be hard to remember and you’ll need to make it obvious. Other times you won’t feel like starting and you’ll need to make it attractive. In many cases, you may find that a habit will be too difficult and you’ll need to make it easy. And sometimes, you won’t feel like sticking with it and you’ll need to make it satisfying.

Every action you take is a vote for the type of person you wish to become. No single instance will transform your beliefs, but as the votes build up, so does the evidence of your new identity.

Trades are always happening whether you see them or not.

• Yes to the early meeting = no to the quiet morning
• Yes to the extra project = no to the free weekend
• Yes to something that drains you = no to time that fulfills you

Saying yes to one thing is always saying no to something else. The cost of a bad yes isn't just the time it takes. It's whatever could have grown in that space instead.

The point isn't to say no to everything, but simply to recognize the difference between a good yes and a bad yes. Then, try to improve the ratio in your life.

Research has shown that people who track their progress on goals like losing weight, quitting smoking, and lowering blood pressure are all more likely to improve than those who don’t. One study . . . found that those who kept a daily food log lost twice as much weight as those who did not. The mere act of tracking a behavior can spark the urge to change it.

The person who focuses on one task and sees it through to completion—even if they work in a somewhat slow or outdated manner—beats the endless optimizer who jumps from tool to tool and always hopes a new piece of technology will help them finish what they start.