Get Your Students Hired
One motivation reinforcer I've found is consistency. Stay consistently positive with your class and sooner or later they will tag along. Ask people "How ya doin'" and the majority of them seem to want to complain or at least be non-committal. I have bad days like everyone else but never own up to it. When you put forth a positve mind-set people will come along with you - start dragging along and they will drag with you, and where's the fun in that???
I'm having a great day - how 'bout you?