From today's entrance antiphon at Mass from Psalm 68: God himself gives might and strength to his people. When we put our faith in God, we indeed receive might and strength. What if you say that I am simply fooling myself, believing that there is a God? I challenge you to imagine that there is a God and you put your faith in your mind-created god to see if you actually feel mightier and stronger. It won't work or you'd be deceiving yourself. Believe in God, the God of Christ, and things happen, for he is real and true.