When you desire something, and you see someone else who has/achieves/obtains it, you tend to feel one of two things: either you feel inspired, because seeing someone accomplish that makes you more sure that you can accomplish it yourself, or you feel disheartened, because seeing that person accomplish it makes you more convinced that you could never do the same. (Alternatively, you might be indifferent, but that's a boring case.) In the latter case, if you further feel that you can't accomplish/obtain that for some reason other than your own choice, then you feel envious/jealous/resentful (perhaps even in addition to feeling happy for the person). There are three primary ways to deal with this: you can learn to stop desiring the thing (~equivalently, make it your own choice that you're not accomplishing/obtaining it*), you can grow accustomed to the desire/envy so that it doesn't affect your actions, or you can learn to put it out of your mind and focus on other things, so that it usually doesn't affect your life. I'd guess that most people choose the third way, because it's probably the easiest. If you do choose this way, then you will probably continue to feel the jealousy more strongly whenever you see a person with that thing/achievement. *Note that one way to learn to stop desiring something is to find another, similar, thing to desire instead, which is more obtainable.