The key thing to understand is that there's literally INFINITE number of things we could be doing. They all compete for our very limited time. There's only one way to stay sane and productive and it's having explicit PRIORITIES. That's your shield from the demands of the world. That's where you decide where you want to go. (I've written a post about it http://frustrat.com/on-priorities-and-focus/)
Second - no list is a time-management tool. They're just lists. If you want to get a hold of the time you need to use a CALENDAR. That's where you "budget" or allocate the time to do things. The beauty of this is that it shows you when you bankrupt on time. Ie. when there's too much on your todo list and you need to remove some of it. The list will not help you do that. Other benefits of this approach: low stress, low context-switching, feeling of control, effectiveness (as opposed to efficiency).
It's like DHH says in the tweet: "Secret to productivity is not finding more time to do more stuff, but finding the strength to do less of the stuff that doesn't need doing."
Also Rory Vaden is onto something in his "multiply your time" approach: https://www.youtube.com/watch?v=y2X7c9TUQJ8
Another proof of the #productivityhoax is that we all have the same 24h, yet our outcomes are so different. Time is the biggest equaliser. Think about it :)