If you're looking for other pieces of inspiration, you can check out Mibba's Dream Journal Challenge. It'll help give you incentive to write at least once a day (a journal a day) and at the end you may find some good prompts for future stories.
I'm horrible at writing more than three chapters before I quit. Usually I don't even make it that far. I've resigned myself to writing one/two-shots because I know I'll be able to finish them. Good luck on your writing! Starting small is the best way to get the ball rolling.