Maybe you never wanted to do (insert your project here) it hard enough?

Also, having no superfficial friends, absolute no gaming/tv policy and constantly reminding yourself that you are wasting your time on this planet by not being productive, helps me a lot.

Force yourself to get bored by not gaming, surfing the web, watching tv, listening to music. Force your mind to accept that working on your goal is better than sitting quietly and staring at a wall.