After C2E2 this year I decided to start doing a sketch card a day. The daily bit lasted a whopping three weeks. I'm not the fastest artist in the world so sometimes I really have to buckle down and work on actual work without distractions. I like doing the sketch cards though so will try to keep up with it the best I can.
The reason? During C2E2 I was asked to do a few commission sketches and I hadn't drawn openly in public like that since college. I work quietly in my office, often digitally or on marker paper where I can redraw things over and over (using multiple sheets of paper or layers in Photoshop) until they're 'right' to my eye. These methods allow me to redraw and edit very easily. Sitting in McCormick Place and drawing 'one shot/one kill' was waaaay more stressful than it should have been and I was disappointed in the results. I said to myself, "self, that's not going to happen again."
So that's the reason. To try and stay true to the 'working live' conditions I set up a couple of simple rules for myself: have no idea what I'm going to do before sitting down to do it and then finishing it in 45 minutes or less. So for better or worse, these are my results so far.