For a long time, I resisted to-do lists. I wanted the flexibility. I felt that if I kept a list, it would tie me down to a particular set of tasks. Gradually, though, I came around. The busier my work life became, the more crucial it was to have some sort of running agenda on hand. Before long, I even started adding some of those items onto my weekly calendar. In other words, I'd reluctantly become a planner.
Looking back, it shouldn't have been so difficult. In fact, there are at least three psychological benefits to the simple act of drawing up a list of top-priority tasks—whether or not you actually accomplish them.