Earlier quoted context omitted.
This chestnut 'home has too many distractions' line is getting old. Work has equivalent distractions, and those people actually get paid to distract you. It takes time management wherever you sit your butt.
Work distractions are generally work related. The person at work who closes his door gets more output, but often that isn't the output that is needed. The person who pays attention to work distractions gets less work done total, but more useful work. Home distractions are not the same.
In my experience at work, I've seen the opposite. The people most distracted get the least done and it's obvious to everyone on the team. Plus obviously you do need to pay attention to some distractions. Going too far in one direction is not good. I think, however, most people lean more towards distractions than focus.