Lol, a thread for the unmotivated got posts. Wait..that means, this thread is actually..procrastination!
If you're REALLY sure about your project, but just need the umph to get it going, outside pressure has worked for me. I involved my nephews/nieces in a game project, having them draw the characters background or objects. They hounded me with "did you bring my game?" "is it done?" "can I take it to daycare?" until I finished it for them.
I find I do that splitting things up stuff too, just not in a planned way. Like cutting the grass, I'll mow off a section then knock it out. People have actually stopped to comment on my odd patterns, but it just tricks the brain in to saying "Oh look, you've only got this much left until you can move on." I'll give it a try with the game stuff soon..maybe..if I feel like it