Our stories are pretty similar. I don't work from home, but my main trigger is definitely being home alone. Even though you're struggling (as am I), I think it's important to point out that at least we're recognizing that we have problems. For a long time, I was perfectly alright living my life knowing that I PMO'd on a very regular basis. I don't know if this is helpful, but I just keep thinking about how devastating it would be if my friends and family found out about all of this, and even if they did, at least I could point to something proving I'm trying to make things right.
Don't give up. We'll always be addicted, but (hopefully) we'll eventually have it completely managed.
Good luck!