I’m going to shift into an even more pretentious-sounding gear here, but I think of creative acts as having a source somewhere outside our minds, and I think that what we call “making something" is actually us being “open to something that made itself.“  Please forgive me, anyone reading this, I’m just being honest about how I feel.  Anyway, the act of “being open” to these things it’s our job to channel is the agonizing part.  You can open yourself to a single idea but as soon as you have one, your ego starts going “okay I’ll take it from here" and the channel closes.  Staying open beyond a certain point, keeping your ego from spasming, is like standing on one foot or sustaining a fake yawn for 8 hours.

Dan Harmon dropping some great knowledge on the act of creativity.