I think the only thing in life that you really have to worry about is how you treat other people. If you mess up and treat someone else badly, you apologize, and you don’t apologize for anything else. Be yourself and go for it.
My first job was baby-sitting. I had a great time because I love kids. Sometimes, when I’m having a bad day, I’m like: “Oh, you know what? I’m going to chuck it in and become a kindergarten teacher!”