I know exactly what you're saying. I'm not the same without the workout. Maybe that is because I have hosed up my brain so badly that I need that extra endorphin push to feel right. However, I don't feel its a chore. Its just something I need to do now...always. Maybe try working out every other day....establish that pattern and see if your moods stabilize? I do know that when I was sober for a couple of years 'things' started to get easier after about 6 months. Just give yourself some time.