How can I stop being so jealous?

Auburn

my husband and I have been together for almost 3 years. I've always been the jealous type ever since I first started dating. I have been created on before by guys in my past. I just don't trust well at. I don't like to trust anyone. I'm just so afraid to be hurt again. I'm always worried that my husband will break heart and turn out like all of the other guys I used to date. My jealousy and lack of trust has been taking a toll on our relationship. I just don't know how to trust. And I feel like some jealousy is good in a marriage. but as much as I hate to admit it, I'm way to jealous. and my husband gives me no reason to feel so jealous. I just don't know what to do. It really hurts him that I don't trust him. How can I change? Please no rude comments, thank you.