Live life like you want to. Not how people want you to. You are your own person. No matter how hard you try to be someone else, it doesn't work... be yourself and that will!
The ability to discipline yourself to delay gratification in short term in order to enjoy greater rewards in long term is key to success.
When one door of happiness closes, another opens, but often we look so long at the closed door that we do not see the one that has been opened for us
Happiness is not something readymade. It comes from your own actions