Most daily to-do lists fail the same way: they become a rolling monument to everything you haven't done. Fifty items, most of them ancient, and the few that matter today buried somewhere in the middle. A daily list only works if it's actually daily — a short, honest set of what you'll do today, with everything else parked out of sight.
That's the whole design of this tool: Today holds the handful that matter now, This Week and Someday hold the rest without cluttering your view or your conscience. Just try it — put only today's real tasks in Today, banish the rest, and notice how much lighter a short list feels than a fifty-item guilt trip.