So today I took the day off. And I spent almost all of it drawing up a dungeon - one called Sangmenzhang which I've been working on for a long time, and which has been through several iterations.
And it feels good. Along with its many other virtues, there is something therapeutic and stress-relieving about creating materials to use in a game. In a nice quiet room with paper, coloured pencils, dice and some music you can while away hours in a fugue-like, relaxing state, just keying in rooms and writing up random encounter tables. In this age of instant gratification there's something almost retro about it, and perhaps that's part of the charm - the idea that you're putting time and effort into something that won't see any "pay-off" for quite some time.
But also, just exercising your creative muscles is a tool for de-stressing, and in that regard there's really no difference between writing up dungeons and painting, playing an instrument or whatever. It's just that for some reason the former would be viewed as odd and aberrant whereas the latter two aren't. Strange.