What jealousy indicates
When I feel jealous or envious of others it's helpful to remind myself there's no point in competing to be someone else. The absolute best thing I can ever be is me, and if I'm my best me, there's nobody else who could be.
With that said, there's still a lot, a lot, a lot to be learned from those we admire or are envious of. Jealousy is often a sign that reads: "Hey, I have something to learn here."