You remind me so much of myself. I hope I do not step on your toes here but the obsessing part has to do with your self esteem and anxiety issues. I have delt with this for a long time and the ONE THING that helps me is running, for 1 hour and Yoga. I base my self worth and well being SO much on my husband I forgot about all of my great qualities. I am detaching right now..for the first time. It is a hard thing to do to not worry about every little thing that my H does, really. You have to work on yourself. You cannot change him. When you begin to do this you will feel so much stronger. You have no power in the marriage, I know because I feel this way too. I would beg and plead with my h to not leave me and guess what...he did one night and I said goodbye...let me know you are safe when you get to where you are going..guess what..he came back. Right now I am getting stronger, sure I have my bad days and right now..is an obessive bad time..but I will NEVER let him see it. I will not let him see how much he is hurting me. He does not deserve it nor does your H..Truth is, they are running away from themselves. Hang in there. Therapy will really help. I have done self help, vitimans, exercise..which has helped.