100 times this. I like listening to podcasts and interviews with great creators in the various areas I work or hobby (music, writing, variety & comedy), and if one thing comes up over and over again in interviews with masters, it's this. It makes you better, faster, and saner. Seinfeld has a great rule for this: never show something you wrote to anyone on the same day you wrote it. It's brilliant in its simplicity. You need to firewall creator from editor from performer.