I was sort of uncomfortable for a while trying to do some of my old hobbies ( music, motorcycling, etc.) I think that because we are so accustomed to having the substance in the middle of our passtimes, taht it takes a while to become more and more acclimated to our "new" self in the midst of "old" things.
I got better by limiting the exposure .. I would tell myself I am going to go and see te band, If I am enjoying it I will stay, if I am not, I'll go. I'm up to about a 3 hr concert, or an hour at a bar to check out a band. I can ride the bike all day and not be uncomfortable ( cept for my buttocks falling asleep).
It isn't easy for anyone to stay constantly positive while dealing with the daily ups and downs of life. More so it seems that we become wuicker to process and appropriately express our feelings wit hpractice. Just like playing music, we practice to get better.
Hang in there your doing it!