wow, such hate in the comments. I think some people are taking the "focus" theme too far. Focusing on one thing doesn't mean you absolutely ignore everything else. If you're going to ignore co-workers, then you might as well skip taking a shower in the morning, eating breakfast, and all the other things you need to do, and just FOCUS, FOCUS, FOCUS!
You seem to be wallowing in all-or-nothing thinking. "Hate," "absolutely ignore everything else," skip showers. Nobody is saying these things to the extremes that you're interpreting them.