You can obsess about serving your customers/audience/clients， or you can obsess about beating the competition. Both work， but of the two， obsessing about your customers will take you further.

"我们总是在寻找答案，但有时问题本身就是答案。"

The best performance improvement is the transition from the nonworking state to the working state.

若你遇上麻烦，不要逞强，你就跑，远远跑开。