鼓勵比批評更有效

對別人說他在某方面有多糟糕，在這方面沒有一點能力，絲毫不能讓人滿意，這樣，他想要努力和進步的念頭就被你破壞掉了。然而，如果使用相反的手段，給他們多一些鼓勵和讚美，不要把事情複雜化，讓他們明白，你相信他們還有很多潛力，那樣，他就會竭盡所能，做到你所期盼的。

Tell a person that he or she is stupid or dumb at a certain thing, has no gift for it, and is doing it all wrong, and you have destroyed almost every incentive to try to improve. But use the opposite technique --- be liberal with your encouragement, make the thing seem easy to do, let the other person know that you have faith in his ability to do it, that he has an undeveloped flair for it --- and he will practice until the dawn comes in the window in order to excel.

Dale Carnegie<Make the fault seem easy to correct>