Whatever you do, you expect something out of it! You are working so you expect a good pay, a good environment and a lot of other things. You meet new people, you expect them to be good to you as you are generally very good. You lend someone something, you expect to get that back within the promised time. You expect you expect a lot!
So when the things do not really work out as expected, you end up disliking things and slowly you stop believing in things like dreams and happiness. It becomes even harder when you fail to express yourselves.
The key to this is not to expect anything from anything that you do. That way you will have nothing to lose. As a matter of fact, anything that/which you will get will be served as a surprise on a plate for you.
You win or lose, it will not matter anymore as it had never been about the result, you had always wanted to be a part of the journey. This is what we have always been taught, participation is the main thing.
Participate, appreciate, do not expect, have a smile and life will be easy!