While having mentors and individuals you look up to or admire is more than great, having a negative competitive attitude toward others may be harmful and can develop into full-blown envy (and who wants to have to deal with this ugly green monster each day.) Yes, there are many reasons why jealousy might happen, and we all do experience it occasionally. Examine your own innermost self; often jealousy might result from insecurities. Remind yourself that you are special and on par with everyone else. If you can't learn to appreciate your strengths, you won't feel at ease and secure in yourself or your many wonderful characteristics and skills. The most crucial thing to keep in mind is that success is not a finite resource that will run out as other people succeed. We can all find success, and it's nice to have excellent friends whether or not we do.