There are so many things that can cause one not to believe in oneself. Doubt, Fear, Hurt and so much more. When these emotions come across our minds that is when trusting in ourselves becomes so important. Someone I care about sent me this inspiring thought in my time of uncertainty, which I would like to share:
" surround yourself with the dreamers and the doers, the believers and the thinkers; but most of all, surround yourself with those who see the greatness within you, even when you don't see it yourself."