not even messed up,some just don't have the same means of entry or the opportunity
Yeah exactly...and taking time away from sleep is the only way because it's the only big chunk of time available.
I disagree. A well-rested mind is almost categorically different than a 5-hour-a-night mind. It doesn't matter how hard you work if you're unable to have the insight that the thing you're working on doesn't matter or you need to make some other strategic change.