For the past 30 years I have recorded what I need to do for every hour in the work day. Teaching a different class every hour of the work day made me very time oriented. I even feel a bit freakish about how much I am a stickler for being on time and about organizing my day.
The first official act I took as a retiree was to buy myself a plan book. It makes me feel as though I have meaningful things to do and helps me keep my plans straight. I do wonder if I will ever outgrow the need to constantly plan and keep track of the minutiae of my day.