Now that I've started working with oil paints, incredibly patient. While last year I could crank out 4 or 5 pieces in an evening, it'll take me a week to get 3 or 4 out, as I now have an "assembly line" of drying oil works, each in varying stages of completion.
I'm more patient with my traditional pieces, specially paintings, than my digital ones. I don't know why. And right now I'm not very patient because I don't have much time, but when I have all the time of the world in my hands, I'm pretty patient.