Take a Break
That is my advice, truly. If you are writing non stop, and reach a creative block, it is, in my opinion, your brain's way of telling you to slow down so it can rewire itself.
Go outside, and just ponder music. You will find inspiration in the strangest of places. Quick example...
I was writing some music with my drummer at his place. We took a break to just sit and think. I listened to his fan banging rapidly against his dresser and it had a fast tempo and unique rhythm. So, we decided to run with it and came up with some tasty music.
So, in summary, don't forget to take breaks, you will let your brain refocus when you go to compose again.
Detailed posts arriving shortly, hang tight guys!
<3