What is "success" mean to me?

I think there will have many ways that let me felt success. For example, when I have prepare something for a really long time, when it is the day I need to presents, and  I have a really good result. I'll felt happy because of success. If I have done something that make the other people happy, I will also felt I have done something success. If I was playing games, and I finally pass the game, I'll feel success. Overall, I think success for me means to let other be very happy and let them think is great that I have come to help them. It's because I'll felt that I have do something right, and I finally do something right and let others felt they needs me. Usually, to let my self to feel success is really difficult, if there's any thing is wrong, I'll think this wrong will affect all the thing I have done, and I'll feel I fail at last.