Motivation or what?

I would use a recorder and record any idea you have, so when you play it back you know if it sounds good or not. I always do that with my poems. Sometimes to hear it externally is better than in your head and you can plan better on what you want to write and what can be thrown out.

sometimes if i have trouble writing i just write down what i want and a good description so that i don't forget how i want it to begin and end. all writers have that problem sometimes.