Is this a parody? Not to be cynical, but I'm curious how a nested to-do list can have such an impact that it prompts people to say "this made me cry."
Planning gets simple and you tend to do things the better way, your mind which was just filled with things about this and that is now ready to do something about those things.
Of course its still odd to link someone to just a to-do list manager instead someone should explain what should be done with that tool.