Good thread! I'm the opposite of this and find I actually have too many ideas, and that it's a case of deciding which things to rule out and the real difficulty is staying focused on one project.
I'm the creative one on a two-man game team, which I think is a good dynamic: I write, design, come up with ideas, sort out the graphics & audio, while my partner handles the coding, problem solving and technical details.
If you can code and are technically minded, I'd recommend finding a talented and reliable creative partner. I find that- unless you're a Leonardo Da Vinci style genius- very, very few people excel at being both creative and technical.