If faith grows out of love and love from hope and hope based on knowledge which is the best remedy for fear, then faith in oneself is the highest most honest faith that one can have. Because it's obvious that you can only love what you know and that what you know best and deepest you are destined to love most. If you believe that you were created in God's image or you believe that you are the pinnacle of evolution no matter how imperfect you are - you have to love yourself to be able to love anyone and anything else
It is a delusion to believe that I know anything at all if I don't know myself first and from myself my deepest desires and boldest dreams. Then it looks like you can't believe in anything at all if you don't have faith in yourself first. And if that is the most honest possible faith why don't pray to yourself:
Dear me - please, help me become the person that I want to be and may my will be done... Perhaps if you do that then God, or Nature or Society or all of them together will help me achieve just that. Or not - you do believe that God will trade favors for prayers (as if God needs anything from me) or Nature will just take a course naturally favorable to me (it actually did already if I am the progeny of a long line of survivors or perhaps because they were survivors it looks like nature was simply good to them.
David didn’t wait for God to kill Goliath - but picked up a couple of pebbles and opposed the scary giant who died confused by his own arrogance. I can’t imagine David praying to God to kill Goliath because David is understandably reluctant to do it himself. David has faith and took action in his own hands to get what he wanted. Was he always good - no. But what makes David admirable is his honesty and faithfulness to himself.
You cannot be saved if you don’t save yourself. That’s what airline safety instructions tell you to do. If you don’t put on your oxygen mask first you may faint before you are able to help that child next to you. You have to love yourself so everyone can love you and so you can love the others. And you can only love yourself if you reach deep inside to that divine essence, some call soul.