Hi tandwstone. Welcome to Psych Central. Sorry you are feeling in such a depression. Kaliope is right about if you are still in this relationship with your husband, it may not be helping you. I don't know the factors in your giving up the kids and if you are welcome at your parents house. Maybe one step is to talk to places that cater to women in distress and they may be able to be an advocate for you. A therapist that understand surviving mental and emotional abuse could really help you get back to stability.
Glad you have joined our community. It has been a slow process over the last year, but I have become more active in the community and it has helped balanced out my isolation on the outside. I have also found it has helped me build self esteem. This article explains that in more detail.
Building Self-Esteem | Psych Central
Many people here at PC find they can share these feelings and what they are going through with the confidence that people go through similar things and can empathize. So many forums are offered as well as Chatrooms (after you have 5 posts or comments on others posts). Depression chat meets on Thursday night at 9pm EST and Anxiety Wednesday at 8PM.
You can also be an active member in other ways like supporting others in their questions, reading articles and posts
http://forums.psychcentral.com that are applicable to your area of concern.
Please feel free to private message me or any of the Community Liaisons by left clicking on the name in blue to the left of their post) for questions or just to share.