To get what you want, you have to take a shot. You may believe you have what it takes, but the only way to prove it is to do it.
Saying it isn’t as powerful as showing it, and that includes showing it to yourself. The only way to know if you’re as good as you think you are is to test yourself.
To know if you’re better than average, you need to test yourself against the average. That’s how you separate confidence from capability.