Without question my most enjoyable times at Art College were spent in the 'life room', often working on quick 10 minute poses where one had to work extremely fast. It involved noting the essential, then finding the quickest route to bung it down on paper (not always successfully).
I've always preferred drawing to painting, and the majority of my work is more 'drawing with paint', than actual painting.
Also, most of my favourite bits of work have been little throw-away scraps, of no consequence to anyone but myself; this tiny self-portrait being a good example. I suppose it's the spontaneity and freedom that appeals; no pressure.
I've been sorting through stuff. Chuckin' out.