I've been doing a poor job lately managing my To Do list. As a reminder I pulled out a matrix I've used as a visual reminder in the past. If something is strategic and requires my unique expertise (upper right quadrant of matrix), it should be on my To Do list. If something is tactical and does not require my unique expertise (lower left quadrant), it should be on my Not To Do List. Everything else: I'm doing only as long as it takes to train and/or hire someone else in the organization to do.
Sometimes the difference between success and failure is not found in the To Do list, but the Not To Do list.