Thanks for that thought! It is important to believe in one's self, for sure. If a person doesn't believe in their own abilities they often won't try things and they will never find their full potential.
Religion could help with this, if a person feels their god is powerful and able to help them with things. It may make them try things they are scared to do. But also, sometimes a person might not try things because they think their god will take care of it for them. So it could go both ways depending on the person and the situation. Just some random thoughts based on your excellent comment! :)