... by logging what I do every half hour for a week, whether I feel in a good mood or a bad mood, and alert or relaxed.
Most of the time it's being on my own, working, doing housework, on the intermewebthingy, sending emails etc.
There are, however, no gaps to say I'm getting really pissed off prodding the data into a little PDA and it's really getting on my tits.
I may feign sleep over the entire weekend, just to have a break...