I'm so jealous of my sisters millionaire lifestyle, please help?

She may have all of the materialistic things to make her happy...but is she actually happy with her life, with who she is on the inside? She may be just as depressed as you are, but she hides it under all her expensive clothing and bags. If I were you, I would be grateful that I didn't have all of that stuff, because it makes you really appreciate the things that you do have.