People can become addicted to positive feedback, leading them to constantly do seemingly satisfying things. However, it's how we handle and iterate on negative feedback in work and life that determines our ceiling. It's like when we were in school. Solving problems we knew how to solve felt satisfying, but it didn't guarantee a high score on the next test. Problems we didn't know how to solve might intimidate us, but mastering them was the key to achieving a high score.