It Always Feels Good to Make Progress.
Intellectually, I know that there are people that really do enjoy doing nothing. The Dilbert Wally's of the world. They enjoy the amount of work they don't have to do. I'm not one of them. Today was a very un-Wally day for me, and I loved a lot of it. While not everything was going my way, the vast majority was, and it was really fun.
I was able to get several things done for my webapp. They weren't terribly hard, and it didn't take more than an hour each, but the cumulative effect is to make the app seem like I was really making progress. Lots of little things that had been nagging at the users were cleared off my TO DO list.
It's great to have that feeling of accomplishment.