Jealousy. How to deal with it?

If it were possible to describe the universal cause of the origin of jealousy, then I would define it as a sense of ownership. A person who is an owner is a person who does not want or is afraid to lose a “beloved” object. If you look deep into the personality of a jealous person, then there is usually a fear of being abandoned. A person begins to strive to keep another close by at any cost and in no case allows him to "leave" himself. There is control over the life of a loved one, control is excessive, sometimes reaching the point of absurdity.