Enjoy yourself: to get pleasure from an event or experience.
Verb: I haven’t enjoyed myself so much for a long time.
Find Yourself: separating our own point of view from other people's expectations of us.
Verb: You will find yourself without any friends if you continue behaving this way.
Help Yourself: to serve yourself something, usually food or drink, without waiting for permission or someone to do it for you.
Verb: Joshua poured himself some juice.