How to train the mind in not expecting?

Question: How to control our mind not to expect anything from others except doing our duty?

Answer: This noble quality which you have mentioned has to be developed very slowly. After many failures, we shall succeed surely. But it may take a long time. In the beginning, we have to learn to be unselfish as much as possible. When we become absolutely unselfish, then only we shall not expect anything from anybody, rather, we shall always feel like giving to others.