I feel we all give our brains far too much to try to comprehend, list size wise, when it comes to tasks to do. People that become really good at it find their own very unique way, from what I have read and where I see my own endeavours leading me.
I've noticed that many of the techniques or guidelines out there on the web involve resisting society or technology in someway. For example, quitting Facebook and Twitter, helped improve productivity and satisfaction. Saying "no" to many of the things that define and shape the society we live in, indicates to me, at least, that there's nothing abnormal with being depressed or being an escapist. It's the natural response, I believe.
Perhaps you're saying that modern life pushes people away from healthy eating and exercise and sensible worklife balance and towards alcohol and caffeine, and that depression is the natural result of that. In which case, I agree.
You mention information overload. Here's a nice example of sub-optimal advice about procrastination. It's too long for anyone prone to procrastination to actually read.