It does make sense. Belief is a powerful thing psychologically. People who believe in themselves because they were raised by parents who believed in them have a huge advantage over those who weren't. The placebo effect illustrates the reality of belief.
If only we could harness the power of belief in a non-religious way. I supposes this is what all the business gurus and life coaches are trying to do. To get us to raise our positivity and so believe in life and our own personal power.
I do remember the feeling of having a strong belief that I was being looked after by God and angels. It was powerful, even fantasy can energise and motivate. I suppose what we're talking about here is the power of the human brain to accomplish things if we believe it's possible. It's a fascinating subject, thanks cobweb.