I suppose it depends what you are jealous of. Jealousy is a natural feeling and if we didn't all experience it at some time on our life, we would either be perfect, lol, or conceited. haha
Just don't let it clod your judgement. Be happy for someone and/or envious of a situation but don't let it lead you to hate. Now if it is relationship related jealousy... be very, very careful.
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"I'm staring at the sun, not the only one who's happy to go blind..."