Jealousy

"Love is not jealous, ... does not look for its own interests, does not become provoked."

Jealousy is when you react negatively towards the possibility of losing what you have to someone else. Unlike envy, it usually involves three people, rather than just two: you, the person who has what you want, and the person who threatens to take it away. It's an unhealthy habit that can make any kind of relationship crumble; if you're a jealous person, you've probably already seen how much damage it can do. But at the core of jealousy are some fears and expectations that are hard to shake, unless you make a conscious effort to cast them away.