history: I get jealous when i see my friends earning more money then myself. Isn't it annoying when your friends earn more money then you but you work just as hard. Sometimes life isn't very fair. I like to think of it as motivation to get a better job.
current: Very true. I suppose i just get a bit jealous sometimes.
next: It happens, I think it's part of human nature. Just try and focus on your own well-being and you'll be alright!