Nobody owes you anything

In 1966, investment analyst Harry Brown for Christmas wrote a letter to his nine-year-old daughter, which is still quoted. He explained to the girl that nothing in this world — not even love — should be perceived as given.
Hi, honey.
It’s Christmas now, and I have the usual problem – what gift to choose. I know what makes you happy – books, games, dresses. But I am very selfish. I want to give you something that will stay with you longer than a few days or even years. I want to give you something that will remind you of me every Christmas. And, you know, I think I chose a gift. I will give you one simple truth that I had to learn for many years. If you understand it now, you will enrich your life in hundreds of different ways and this will protect you from a lot of problems in the future.
So: no one owes you anything.

This means that no one lives for you, my child. Because no one is you. Every person lives for himself. The only thing he can feel is his own happiness. If you realize that no one should organize your happiness, you will be freed from the expectation of the impossible.
This means that no one is obliged to love you. If someone loves you, it means there is something so special about you that makes him happy. Find out what it is, try to make it stronger, and then you will love even more.
When people do something for you, it happens only because they themselves want to do it. Because you have something important for them – something that makes them want to like you. But not at all because they owe you. If your friends want to be with you, this is not due to a sense of duty.
No one should respect you. And some people will not be kind to you. But at that moment, when you learn that no one is obliged to do good to you, and that someone can be unkind to you, you will learn to avoid such people. Because you don’t owe them either.