" We learn more from our mistakes than our successes, more from criticism than from praise. Why, then, is it important to give more praise than criticism? Several reasons. First, it guides people in the right direction. It’s just as important to let people know what to do more of as what to do less of. Second, it encourages people to keep improving. In other words, the best praise does a lot more than just make people feel good. It can actually challenge them directly. "

― Kim Malone Scott , Radical Candor: Be a Kickass Boss Without Losing Your Humanity