Asked for a divorce

So, I have been getting into astrology lately. I got so excited about venus going retrograde that I ended up asking for divorce early. I didn't tell him the real reason. I just said I wouldn't be around a lot once I go into international business and that we should part ways. He said, "ok,"

Several days later, he made me look him in the eyes and give a religious promise to him so he won't owe us money. the agreements that he made me make was:

1. no divorce until all the children are 18
2. I can have full custody of our disabled adult children
3. I must give up all rights to alimony

He doesn't want to support us. As it is, he barely gives us food, and I know it's because of the other women in his life. I have to use some of my student refund money to support my children and enough food. I pay for all the bills using our childrens' SSI money. I am financially stressed but trying anyways.

I am hopeful for a much better future where I can be the provider he always promised to be.

Anyways, any advice is much appreciated.