Hi, patienthope.
Welcome to SR.
I wish I could tell you that if you just tried hard enough, your husband would heal and embrace recovery.
Sadly, that isn't possible.
You can't cure him, and you can't control his use.
Do you have family support? Friends? People you can count on?
I would suggest group support as well, like Al-Anon or Nar-Anon.
There you will meet people who have been in your situation, and have a lot of experience, strength, and hope to offer.
Good luck and good thoughts.