Unfortunately I do live by the clock as I have to work full time. The battery in my watch ran out today but I didn't miss it as I thought I would as the routine was such that it all looked after itself!
I get up when the alarm goes off at 6.30am, go to work, attend meetings at pre-arranged times, finish at a set time or later. I come home, make conversation, cook a meal, deal with life in general, watch some TV etc.
Once we reach midnight I start to think about going to bed with an ambition of making there by 1am. Alarm goes off at 6.30am and off we go again.
Until the weekend when its more relaxed and we avoid anything too predictable.