Oh, so I didn't even get to the part of this workshop I found most interesting- the studies done of new faculty member work habits to assess how the ones who easily moved through the tenure process did it. A psychology researcher, Dr Boice from SUNY, found that the most successful faculty worked fewer hours by FAR than the least, but that they worked effectively. Less successful faculty suffered from productivity "binges".
Most worked for less than 90 minutes at a time, between breaks. They spent more time on personal hobbies/with family etc.
Funny, it seems so obvious, but I'd never really considered it before.