How long have you been sober? I know that, for me, it took a while to get motivated and interested in things again. I went through a period of boredom, wondering if I'd ever be happy (and what was happiness anyway?). I just kept going, though, because I knew I didn't want to go back to the way I was living.
It really, really, really does get better. It's just words right now, I know. But I don't think there would be so many here saying that if it weren't true (we always think we'll be the exception to the rule, of course!)
Just give it time and be patient with yourself, OK?