There seems to be still at least some good things: You still have you job! As unemployed I know that's a lot!
And it is your ex's own shame if she calls you a junkie. You've made a decision to recover and that really needs some courage! She's just blind if she can't see how responsible you are.
It might be hard to find some one new when you're in the middle of recovery. And it takes so much energy that handling a new relationship in the same time could be hard. (Not necessarily though) And I know this is a cliche, but I'm still going to say this because this cliche is true: You'll never know when you're about to meet "the one." It happens always when you least except it to happen. It has happened to me, and every one I know.
I really don't know what else could I say. Just hang in there, you're going to make it!
I mean, really, you're already done 41 years! Even though I don't even know you, something tells me that you are a strong person. Probably because you've even managed to keep your job regardless all the **** going on.