"Don't get hung up over the idea... The only thing that really matters about The Idea is how you (and your partners) feel about it. If you can’t stop thinking about it for weeks on end, get up out of bed to write down brainstorms about it, and don’t get tired of working on it, that’s the right idea. If you have to convince yourself to keep going on The Idea, that’s the wrong one."

In other words, "the idea doesn't matter... but the idea matters".