Dave Allen's Getting Things Done worked well for me. Although I don't see it as a time management strategy, more of a task management system. I don't really us

Dave Allen's Getting Things Done worked well for me. Although I don't see it as a time management strategy, more of a task management system. I don't really use the location-context lists. What I found handy was the task workflow and getting to inbox-zero (no un-handled emails in the inbox). When I first implemented it at work, I spent three days going through some 2k+ emails. I found about 6 or 7 emails in that lot that probably needed some action, or was sparking some idea that actually was quite valuable. But the bulk of emails you can either delete (you'll never need it again) or store for retrieval. And the few that require an action, either do it immediately (if it's less than two minutes) or defer/delegate. Another life-hack is to be ruthless and unsubscribe from as much as possible... almost none of it is necessary.