Two things come to mind. Call your family doctor and tell him the situation at home for the last year. I doubt your husband has been sharing your perspective and since you are suffering, the doctor needs to know.

Then, get yourself into some sort of counseling; I'd start with marital counseling. Depending on how you think your husband will take it, tell him you are going (or not.) If you can talk to him, say "I am going for marriage counseling because I am no longer able to live like this; your problems have had an effect on me and our marriage that I need professional help dealing with." He'll either offer to go with you or not. Go either way. If you think he is too volatile to handle your announcement, go and ask the counselor how to tell him (or ask your family doctor).

It sounds like your husband is mismanaging your lives through his problems, which don't sound like [for lack of a better term] simple or uncomplicated anxiety to me (but I am no medical professional). After a year you and he should have seen some sort of progress or some sort of treatment plan or some sort of escalation of the help he is getting. I don't see any of that in your post. It's past time to get to the bottom of what the situation is so his stress doesn't continue to ruin your life.