By definition, Richard, you are an ideas man. Nothing to be ashamed of, for sure.
What that also means is that you need a dabbler. Someone who will go (to be Ferriss-esque about it) and micro-test it. To ask some folks if it'd be a good idea. Run it through the Business-idea.com gamut, or riff in a smaller community like Sprouter where you can find people in that space and say "Hey, would something like this have legs?"
Finding a dabbler might mean grabbing an intern from your alma mater, a research-happy pal, or a guy who's name you can't pronounce on elance.
On my last startup, I had a friend who was interested in co-founding. To vet him properly (we'd never actually done business together) I laid out about 4 steps of due-diligence for him to do before we moved forward. Just wanted to make sure he will willing to hustle a bit. It was necessary, both relationship-wise and business-wise.
But laying in bed until 2 am with your brain on fire sucks if you don't have someone who will do the homework for you. Find a dabbler. It will complete you.
Best of luck!