Time. Artistic pursuits require unfettered time to blossom, and grow. Right now, my time for such things comes in fragments. An hour here, a couple of hours there. That's just the way it is. I'm not complaining, but it can be very frustrating sometimes. Many artists speak in glowing terms about creative momentum; about those times when there is no time... just you and your craft, with little or no awareness that hours are passing. When I read articles about artists, they will occasionally make a casual comment about being so caught up in the creative process, that they forget to eat. Funny. I don't have that problem.