I am so sorry for your situation.
All wonderful words of wisdom before me.
Today I was asking myself similar questions reading the addict in my life. Since I do not know that it is said often enough- it's okay to feel what you are feeling and DO not beat yourself up for how weak you feel right now and get caught up in the "shoulds."
Realize where you are at now and where you want to be.
If I was at a better place in my recovery than I would feel entitled to dish out advice but I am not, so I will not.
Just know you're not alone. Many of us walk/have walked where you are. I think gaining perspective is hard fought. When we have front seats to the addiction, it is impossible to think clearly or rationally.