When I get off track I use Natalies' 2nd technique for counting reels in the video linked above which is:

"THIS-is how-a REEL goes | THIS-is how-a REEL goes," (1& 2& 3 4| 1& 2& 3 4| ) with the emphasis on the first and third beats. Then I go back to listening and watching the dancers in my head. I picked this up on The Session.