Jealousy is usually a bad thing! Its also a sin, but it could be healthy. There is nothing wrong with a little competition. You should never feel jealous of something someone else has. I battled with jealousy between me and my "ex-best friend." I was jealous of her pool, her clothes, stuff she did. It just got really old trying to compete with her. I never felt like myself around her...she competed with me, too. I could never tell her what I had and what I was doing. My best friend now is happy for me about stuff I have or do and I am always happy for her. It was sad to lose a best friend over jealousy, but my friendship now was meant to be. NEVER do what I did. Always be happy with what you have. When you are happy with what you have, nothing in the world can beat you. Don't let jealousy and pettiness drag you down.