>>> I’ve felt the pull. However, personal motivation to succeed keeps the wheels churning. I really like your point about motivation. I'm a freelancer and working from home, and I used to think that nutrition, physical activity etc has a lot to do with it. Yeah sure it does but recently I think at the end of the day, it's just about will power and deep, personal motivation. If you are not enjoying it, no diet will ma…
That said, good diet, healthy social life, and exercise are of paramount importance to will power. The better balanced your life, the more will power you're going to have.
But it's also important to manage will power. When you're tired, just stop, take a break. Even leave things for tomorrow. You are likely just fooling yourself that you can still get stuff done and wouldn't you rather just take a proper break than spend the next hour or two shuffling your feet and getting neither rested nor getting work done?
As for short breaks -> Timers. Use timers. Seriously, use a timer.
Shameless plug, I've been working on a book about this stuff: http://nightowlsbook.com