Accept that "work" does not mean 8 hours a day heads-down actively writing code. Humans did not evolve to spend 40 hours a week staring at a box of light, mashing plastic buttons while slumped in a chair and if you can't do that it's an attention disorder. The six hours of what managers might call "non-productive" time in my day is requisite for the two hours of "productive" code-writing mixed in. That's 8 hours of "real work" in my book, and I would wager higher quality than that of someone who forces themselves to just grind out code against their body's will.