It seems silly to say, but....when people set higher standards for themselves - they have a better chance at achieving them. There's truth to the sayings: "Dress for success", "Good, better, best; never let it rest till your good is better and your better is best", "God has entrusted me with myself", "Tell a lie once, and all your truths become questionable".
and my favorite...
"Be the person your dog thinks you are"