how to stop masturbating

Hey girls this is a serious topic, I started masturbating at a young age and I've become addicted. I am in a happy relationship (I love this man and would do anything for him) and I don't want to jeopardize that. But I've become addicted to the dophamine released in my body every time I masturbate that I can't get away from it. That sometimes I believe affects our sex life. Seriously being, that I can't fall asleep unless I do it. This is a serious post from one girl to another. Please help. Thank you!