I once read in an biography on the Beatles that they would often hold off on writing down songs till the next day. Their theory was that if their song truly was

I once read in an biography on the Beatles that they would often hold off on writing down songs till the next day. Their theory was that if their song truly was "that good" they would have no trouble recollecting it the next day. And if they forgot it, then it clearly wasn't worth doing. I like to apply this principle to a lot of the ideas I choose to work on. It's easy to think that every idea is the cat's pajamas, but sometimes it's best to let the concept cook for a bit. I find that after a few days or so the idea will have either fizzled out, and I'll have forgotten about it, or I'll be itching to really work on it. This is just my 2 cents.