I have waves of that type of thinking, too. (I'm 2.5 months, so we're recovery neighbors!). Some days I'm just so blissfully happy. I'm inspired, I have so many plans, everything I want seems possible. I see challenges and they get me so enthused I'm just all sunshine.
And then, for no real particular reason, everything feels impossible. I feel like I've fallen behind my peers and will never catch up again. I feel like my faults are insurmountable because I'm just never going to be good enough. I don't want to get out of bed, either.
I think part of it's brain chemistry... I know PAWS can manifest as depression and anxiety, and the wavey-ness of it seems to fit that model. I also think part of it is just that I've been hiding from my problems, and now I'm just living with them. Being sober hasn't magically fixed every single problem I have. And I get impatient with that.
Anyway, I hope both you and I feel better as we get more practice under our belts.