Way back in the day when I truly disliked my job, my meeting coping strategy sometimes was to work out, long hand on paper, my salary per minute of being at work. I'd try to add in all the extras I could think of on the $ side, and subtract everything I could think of from the time side to make the number as big as I could. Was a pretty good way of killing time during particularly painful meetings, and always left me feeling better.
When I was FIREing (the first time), I made a spreadsheet that calculated the marginal taxes for the year if I quit on any given day, adding in expected bonus amount,etc. So I ended up with the amount per day I earned for the calendar year, assuming I quit any given day. This was more of a planning exercise, but it also made it easier to get to the decided upon date.