I heard some good advice recently: If you are going to be jealous of someone, then you must be jealous of everything about them. This means you can't just covet Angelina Jolie's lips, you also have to live with her reputation as a home wrecker and deal with Brad's phobia of foot selfies. And you can't just want Michelle Obama's arms, you must also be trailed by the Secret Service and be married to someone who travels a lot.
But I was never that aspirational in my envy. I was just jealous of a friend at work.