I think it's something that's a person by person fix; much like the 100's of methods of task management there could probably 100's of methods of task management for folks with ADHD. For me, I've been playing around with implementing a deadman's switch on my Trello board using Butler, and it's been an interesting experiment. Essentially I have a task that has to be 'completed' each morning before 10am, if I don't I'll get an email that it's overdue, if I do complete it Butler will set a new due date for the next work day @ 10am.

It's been one of my better attempts at trying to circumvent the 'scorched earth' leaving of the task management process.