One of the great bonuses of working from home. You will be surprised how easy it is to get your 8 hours if you don't commute.
Seriously, HN is a gigantic delicious timesink that has probably cost all of us collectively millions.
It's possible, but what you get back from HN is also enormous; from jobs to interactions with very smart people. I mean, Alan Kay was involved in discussions here, just yesterday!
Heck I'm doing it right now with just a web browser sat at my desk...
Working from home was like being at work all the time. It started to wear on me. Now that I'm more mature I might be able to handle it, but at the time I just couldn't sustain.