I have a controlling and jelousy behaviour ans is effecting relationship, don't like this about myself and want to change but don't know how? to late?

Counselor?: Jealousy is a common emotion in many relationships. It may sometimes get to the point where you or our partner are seriously affected by this emotion. The fact that you want to change is very encouraging. Consider talking with your partner or a relationship counselor about these feelings. It is never too late to work on your relationship.

Ok: Part of any problem is admitting thatso congratulations. What i would do is try to analyze why you are feeling the way that you do and what you can do to improve that situation. Your doctor, psychiatrist, psychologist could guide you through the behavioral techniques. It might be best to follow up with them.