[autophil]

Identify quickly what your productive hours are and what aren't. For example, I can't seem to hunker down and get sufficiently focused until after lunch. I tried battling it but to no avail.

Now, I do other stuff (laundry, errands, physical work) in the morning and start on the computer at noon. Works much better.

Sleep? For me, some weeks I'll live on 4 hours a night, but then I get super depressed and will jack up the sleep to 6 or more. I need to improve on this, so I'm probably not one to take advice from.