Sometimes like this morning I have a terrible time concentrating. I spend hours doing nothing except trying to remember what I was thinking or doing.

I noticed that I can enter a mindful state or trance-like state almost instantly where normally it takes me a lot of concentration and time. (I don't know much about meditation, so I'm not sure of the technical term for the state.) Anyway, it feels better to just give-up trying to do anything and try to meditate instead.

So maybe depression is our brain's way of telling us that it is tired of the constant barrage of abstract stimulation (reading, talking, problem-solving) and it wants some rest? This might explain why depression seems to be increasing in our modern society with cell phones, internet, TV, etc. Our brains aren't getting enough time to rest?