But the environment matters a lot less than the fact that when I get home from work—which is a two hour commute each way (sorry, I can’t afford to live in downtown San Francisco)—I just feel like being mentally incapacitated. Occasionally I have a little spark of brilliance (relative, not absolute) that motivates me to write a short bit of code, but the code is never more than one or two hundred lines. It usually consists of some little trick.
That is: you cannot fight your day-to-day work — long-term — by working on your own stuff, when you get home after already spending 6-7 hours working and thinking in a particular way. The author tagged it "sad" for a reason.