Being financially secure when going into a possible single mom scenario, is less stressful. Yet, I can imagine how burdensome it must feel, contemplating the road ahead, with children in mind. But, I think there is a lot of hope in your situation. You just have to get out of this slump in which you seem to be. It is hard, very hard, to be a SAHM. So many people think how easy it must be, but it's not. You need a break from the little people, be with adults, have grown-up conversation even if it's with a person on the treadmill next to you at the gym. You have one friend there ... is she a SAHM? If so, perhaps you can swop babysitting between the two of you. It will give you time to go do some stuff without the children ... browse the bookstores, shop the mall, have your nails done, take up karate (good stress releasing and confidence builder), do the grocery shopping on your own even. Just for an hour or two.
Just some things that might work. Once you have found some space to think, you will find you will come up with resolutions to your M. You will have to be creative because your H is confused, depressed and is letting things hang, from what I can deduce from your descriptions.
One day at a time.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim