Out of work husband and wife getting sick of paying all the bills?

My husband and I have been married for 8 years. I have a good job as a nurse and make decent money. my hasband has a journeymans licence and almost has an HVAC licence but wont do the final test to actually get his licence because he "doesnt wnat to do HVAC anymore" the problem is, he doesn't seem to want to do anything anymore. He works sporadically at construction things, but gives me little to no money from any of his few jobs that he does get. anytime I ask him for money to pay bills etc.. he gets mad and we end up in a big fight. I have spoken to him ( rationally and also during fights) about how its time to get a real job and stop working for friends. All the bills and mortgage and credit cards are in my name and our house is only worth a fraction of all the debt were in. I feel like i'm stuck between a rock and a hard place. He does give me a little bit of money but not much, but even the little bit of cash is used to pay bills. I want to leave him so bad because it just seems like hes happy riding on lmy cat-tails for the rest of his life and I'm starting to really disrespect hime. I try and avoid fighting as we have an anxious 6 year old boy and things get bad in the house when we are fighting. If i bring any of this up, he shuts down and gives me the silent treatment. I give him when he wants it otherwise the home life is deplorable.. I pray I'll win the lottery , just enough to get out of this mess. what can I do?