The problem is that jealousy is truly the most foolish of all emotions. No amount of wishing someone else doesn't have it, whatever "it" may be (brains, wealth, family, beauty, happiness, etc), will make you get it any quicker. The likely thing that'll happen is you'll graduate from slight feelings of jealousy to serious actions of jealousy. You'll become obsessed and tormented by jealousy that you end up destroying your own life by trying to take away from someone else's. I'm sure you've heard stories or know of someone who slept with their friend's boyfriend, or sabotaged their co-workers job, or caused a rift between family members by spreading rumors, or even killed someone for money.
Actions like these block your own blessings from reaching you and compromise the joy of your spirit. Not worth it. When you wake up each morning spend a few minutes reflecting on how blessed you are to be alive and enjoy the people/things you already have. If you work hard, stay grateful, and help others you will always be blessed with more to be thankful for. Don't worry about what the other person has or does not have, that does not affect what you will or won't have. So peeps, if you sense any feelings of jealousy coming your way (big or small) make sure you throw them right out the window! In the words of Sweetie Brown, "Ain't nobody got time for that!"