Be your self

You can't be yourself if you don't know, understand, and accept yourself first. It should be your primary goal to find this out. Try to take time to yourself and contemplate your life and choices. Try to think about what kind of things you would or wouldn't like to do, and act accordingly; finding out through trial and error helps more than you might think it does. You can even take personality tests, but be careful to only take what you want from them and not let them define you. Work on accepting mistakes and choices you've made; they're done and in the past, so there is no use crying over spilled milk.