I have found a really good book called Overcoming Jealousy, got it on Amazon as it had good reviews. I have to say it is brilliant and really has changed how i feel inside about things. I am really happy and pleased about this positive effect. i can’t say that I will be completely not jealous ever again but I have noticed a change in how I am. I am no longer interrogating my boyfriend and becoming this horrible insecure person! Read this boook if you think it can help you : )