One thing that's critical here is to internalize the wisdom in "more speed, less haste." Know yourself, and find your productivity sweet spot. For example, I a

One thing that's critical here is to internalize the wisdom in "more speed, less haste." Know yourself, and find your productivity sweet spot. For example, I am most productive when I am doing approx 6 hrs of heavy coding a day. More than that and productivity slowly drops. Less, and I could be doing more. That leaves time for meetings, management activity, etc. Most of the time I can out-produce at least three other developers together at 6 hrs/day, and I don't care how much time they put in. That allows really 10-12 hours of work a day max, which means really no more than 90 hours of work a week assuming doing some work every day.