I believe you love your husband and from everything you've written it sounds like he loves you too. I think you need to TALK to him and tell him how his quitting has affected your opinion of him and caused your anxiety.

I know it doesn't make it okay but don't discount the stress your husband must have faced in an unwanted job. How much unhappiness does one have to take before they act irrationally?

I hope you guys can reconnect on this issue soon.