Believe in yourself. Do it without any proof. Do it even if you don’t think there’s a single good reason to. Believe in yourself even if no one else believes in you. Do it even if you’ve been told your whole life that you shouldn’t, even if the only person who told you that was you. Especially if it was you.
Believe that you can do anything you want to do. Believe that you have it in you. Believe that even if you fail, you are strong enough to survive. Believe that the biggest regrets you could have are the chances you didn’t take.
Believe in yourself, simply because you can. What you may lose by believing you can do something and finding out you’re wrong is nothing compared to what you could lose by never trying. You don’t really know what you can do until you try, and you won’t try if you don’t believe. The first step toward accomplishing anything is believing in yourself. I’m a believer.