I have never been married. And really dont have alot of friends to make promises to. But I did promise Brian (who is really my ex boyfriend) that if we did break up that we would still remain friends. It has really helped! He is my best friend and I didn't want to lose him if it didn't work out dating.
Over the past 3 years I have learned to promise myself to strive to know myself and to love myself every day. So far I have been successful but there are somedays I do struggle with it but thats okay. As long as the next day I get up and try again!