The reverse of course is true. A sceptic questions even themselves. Whereas a believer in God believes they are right all the time, because. "God always agrees with me, and he can't be wrong."
It's incredible to see how often the voices in a person's head will tend to agree with whatever it is that they want to do, no matter how heinous or inane.
Yeah, don't believe in yourself. You're an incompetent. Let me help you hold your money... You can hold my dick in your mouth as an exchange.