I wouldn't say that I get jealous, honestly. It sounds like bullshit, but like... yeah, I mean I guess I just understand I can't be/have the best at/of everything. I respect people who are very talented, but I'm never jealous. Sometimes I want to surpass their ability, but jealousy almost implies a passive sort of "I wish I could be as good as him", whereas with me it's more like "I need to be better than him, so now I practice several hours a day." It's either that or "Yo, that's cool." If I have a desire to be better than someone at something, I'll work at becoming better. Sometimes I won't become better, but then I just keep practicing, I never really get jealous.
I've also never really been jealous of attractive people or people with attractive girlfriends or whatever. I'm fairly attractive, certainly not the hottest guy in the world, but it's a lot less important when it comes to getting girls than people make it sound. I also get my fair share of attractive women.
This sounds like a really egotistical post, but I think it's not all people that get jealous, just certain personality types. I guess I might be kinda jealous if like my friend won the lottery or something... no, not even. That would be hella awesome, what am I saying? Yeah, pretty much no jealousy here.