Lemon #18. Give a dog
What do you do when a person who has been a good worker begins to turn in shoddy work? You can fire him or her, but that really doesn’t solve anything. You can berate the worker, but this usually causes resentment.
In short, if you want to improve a person in a certain aspect, act as though that particular trait were already one of his or her out outstanding characteristics.
Shakespeare said: «Assume a virtue, if you have it not». And it might be well to assume and state openly that other people have the virtue you want them to develop. Give them a fine reputation to live up to, and they’ll make prodigious efforts rather than see you disillusioned.
Remember. If you want to excel in that difficult leadership role of changing the attitude of behavior of others, give the other person a fine reputation to live up to.
Dale Carnegie @ How to win friends and influence people.