I put my "workout" calendar on my desk. Each day I can cross off the workout when I've completed it. At the end of the week/ month I have a visual record of my accomplishments!
For example, right now I'm working the C25K training on MWF. On T and TH, I ride my bike to school then to strength training. W is yoga and S/Su are "group" activities (golf/ bicycle/ hike). . A successful week has at least 5 days crossed off!