Maybe

Telling yourself maybe your going to do a workout is the same as saying your not going to in my mind. having something or someone is the only way you can turn that maybe into a YES.... maybe its a personal trait, but i find i take very little to convince myself if someone else is doing something to do it with them, and try to do it better too.
Homework: find someone with a common training goal, or fit schedule and challenge them to work out with you.... in turn when they feel like working out and you may or may not be having a bad day , you will be forced to train with them..... peer pressure is great isn't it