Isn't that contradictory? Jealousy is wanting what you don't have, and possessiveness is wanting to keep what you already have. Which should be shunned in your mind?
So, the question becomes do you hate people wanting what they don't have, or people keeping what they do have?
A man can be envious of another mans wife, and a man can feel jealousy when his wife is spending time with another man, of the two I think envy is the destructive mindset/feeling.