Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have the belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.
We have an internal check and balance system. By design we are so filled with possibility, opportunity, with greatness that when we live small, within the bottom of our capability, we innately know we should be living greater than that, and it creates a disconnect inside that leads us to feeling empty, unhappy, maybe even depressed.