Are there any support groups in your area? The churches might have something. You could really turn staying with your parents into a good thing. Do they need help with projects? Could you pick up something part time to help them pay bills? I know my parents could use it! And I think that having them will give you some more support. Dont make this the only thing that you talk about with them though!
Is the facility that you went to close to you? Maybe they could put you in touch with a support group.
You can get over this, but the longer that you let yourself wallow, the harder it might get to pick yourself up. So seek the outside help. If thats what it takes to get you through this, then thats what its gonna take!
You are setting an example here for your kids. They are going to learn to cope from you, so maybe its time that you learn to set a healthy example.
Getting involved in your own recovery from this will give you control over where you are going. And that will help you with some of this anxiety and helplessness that you are feeling.
What kind of a program is it? Does your state pay for the training? Those are great deals, and the things that they usually train for are pretty high demand jobs, so getting into a program like that would be great for you! Have you thought about what you want to be when you grow up?
I guess I gave the wrong finger to the wrong man...