I don't know what it is but I've got a bad case of the winter blues lately. Maybe it's seasonal affective disorder, job anxiety/dissatisfaction, poor sleeping habits, polar vortex frustration, general ennui, or a combination of all of the above. Bah.
(P.S. My photo editing app updated and now I can't figure out how to touch up my drawings the same way I used to. So some of my drawings might look a little different until I figure this out our find a battery way. Argh, changes!)