Disclaimer/spoiler alert: The following insights are brought to you by the miracle of introspection, and should not be confused with factual statements about the human brain.
Sitting down to do work for a few hours at a time is very hard for me. Hell, sometimes even sitting for half an hour to do math (which I like better than most kinds of work) is hard for me. I sometimes think that I have ADD, though I can certainly read a novel for hours.
It feels like there is a part of my brain that is fundamentally discontent to sit and work. It feels like a relatively animal part of my brain - not a conscious, smart part. And it is somewhat easily tricked.
I usually listen to music while I work. I can work to a variety of music, but I find that dance music (the kind you'd hear in a club - any kind of dance club) is one of the most effective kinds. It seems to trick my brain into thinking I am having fun and moving around rather than sitting and working. It's like a part of my mind is actually moving and doing something with a rhythm, and gets soothed/tricked into letting me get some work done.
Today, Pandora on my phone was acting up and sounding shitty as it sometimes does, so I switched to Simply Noise, which I haven't tried to work to before. I have an app for it on my phone.
Of the different noises, I like the brown noise the best, and I like to make it oscillate. It sounds like ocean waves to me.Very soothing.
After listening to this for a while and working, I realized it was extremely soothing indeed. It feels very much like it makes that part of my brain think I am actually asleep. That part doesn't seem to mind sleeping - in fact, it's pretty much content to let me sleep forever. It was really an amazing feeling. I think I may try this more often in the future.