Trying to relax

I'm trying to relax and let the Adderall work, but I'm afraid I'm not having much luck.  Today I had a massage and I tried to just shut my mind off and listen to the music and not ruminate, but it was impossible!  I kept going over and over things in my head, things that were meaningless and only caused me greater anxiety!  I don't know why I do this and it's not just during the massage-it's all day long.  I ruminate all day long and I simply can't figure it out.  I was supposed to go to yoga today but I couldn't summon the motivation to do it.  It wasn't like I was busy, I was just too caught up in my thoughts to get the courage to do it.  Isn't the Adderall supposed to be taking care of this?   I read that it starts working right away and doesn't have to build up in your system.  I have my church retreat this weekend and am worried to death about the possible panic attacks that could occur.  I hope that that doesn't happen.