I agree with avoiding things you associate with smoking too, for me that was coffee and alcohol and even a couple of friends who I always smoked with (I didn't give them up just avoided situations with them where we would normally smoke)
I found rewarding myself for time I went without smoking good too, even my family and friends got in on it- I got a lunch out with a friend (she paid) after 2 weeks, my brother bought me flowers after 3 weeks etc