I’ve never bought in to the GTD (Getting Things Done) movement although my own system of scheduling, tracking, and recording tasks probably has a lot in common with the methodology. One often sees the claim that Org mode makes an ideal GTD platform and it’s easy to see why that would be true. Lots of people use it for that (and only that) purpose.
Michael Fogelman does like the GTD paradigm and has produced a video on how he uses Emacs, Org mode, and Google Calendar to plan his day and keep track of his progress on tasks. If you don’t mind using Google Calendar, you might find his workflow attractive.
Even if you aren’t a Gcal user, you can still adapt his workflow to whatever you do use. For example, his exact process could be used with the Apple calendar app with a different plugin to move entries between the agenda and the calendar.
If you enjoy seeing other people’s workflows or you’re looking for some ideas for your own, you might find Fogelman’s video useful. The video is 13 minutes, 19 seconds long so you might have to schedule it for some free time. If you’re using a system like Fogelman’s, that should be easy.