if im in a bad mood i just pull a Barney Stinson and tell myself to stop being in a bad mood and start feeling awesome again.
but in all seriousness i literally have a calendar reminder every day at 2pm to "do better". i've had this for about 8 years or so. it's just a reminder to try to do better as a husband, a father, a human.
normally i think about my wife and kids. they always bring a smile to myself and in the grand schemes of things, they're all that matter to me.