How can i change who i am?

you can be whatever you want to be, you should stop making yourself down nobody is perfect we all have our flaws but you should learn to live with them and start thinking about the things you like about yourself, before someone loves you or likes you, you have to learn self respect and to love yourself, think about the things you want and then begin to change be confident and don't care what others think just live your life, the relationship you have with yourself is the most important you will ever have think about that