Welcome to SR! But I am sorry for the reasons you are here.
Please read the stickies and keep posting. You may not like what many people will post but I promise you 99% will be dead on.
Addiction is a progressive disease. Left untreated, the ends are always the same: jails, institutions, and death!!
I became as sick as my husband and didn't even know it until I hit my bottom. I got a good therapist, joined SR, read codependent no more, started alanon meetings and a coda support group. I still have a long way to go but I am feeling stronger everyday.
You did not cause it, You can not control it and You can not cure it!! But you can help you and your kids. God Bless!