Whatever system you create to help you with your efficiency (getting things done) and your effectiveness (getting the right things done), a recurring event feature is invaluable. This can be software driven or simply a forward note in the diary. It is of course most often used for stuff such as the regular team meeting (every Monday at 0915), the quarterly review. The squash match etc. But its real power I believe is bringing something to your attention, just when it was slipping away and hence is great for personal change.
Thus: working on your writing? And deciding to do it three evenings and 1 morning per week? Then set those sessions as recurring events. Coaching one of your sales team? Set it as a recurring event. And here's what can be neat, especially if you have a software driven system: to set up a reminder at an odd interval e.g. every 11 days. It breaks the pattern which we humans so easily slip into. Just when we'd forgotten/got complacent-it pops up: how's the sales forecast?
Set up one or two recurring events in some areas for development.