live for yourself

Why do people care so much about what others think? I know i do a lot but it doesn't make sense. You should do things that make you happy not what others want. For the past couple of months I've been not doing some things because of what i think this other person will think. That person shouldn't have an influence in my life but they do and because of that I've been worrying like crazy. This past weekend I realized what I was doing and thought that I should do what I want. No one can live their live worrying about what everyone else thinks because in the end you're not going to be happy. So basically we should live our lives for ourselves because in the end you're the one who's gonna have to live it, not someone else...