There are three things you must always remember.
1.) You are perfection, you are perfect in your own different way, and remember that it is because of your imperfections that you are perfect, they are what make you perfect, they are what make you different.
2.) Don't go out wit the girl/guy that says you're beatiful, amazing, etc. go out with the person that sees your flaws, accepts them, and continues to love even your flaws.
3.) Lastly, when in doubt, nerd it out!