I think what I find difficult is switching off from university. Whereas a job has set hours and tasks that need doing, you can put as little or as much into university as you like. I feel guilty gaming on the pc for an hour even though I've spent 9-5 at uni.
I can't imagine putting in 60 hours a week, how did you find time to do anything else?
There are 24*7= 168 hours in a week, - 60 hours of work and - sleep at 8hrs a day leaves 52 hours a week to do household chores/shopping/cleaning/shower/cook/eat and entertain.
Typically would leave around 5 hours a day for other things.
I never watched TV, I rarely if ever slept more than 8-9 hours a day.
I did have time to do exercise every second day, go to the bar with friend couple days a week, occasional bit of clubbing, skiing most weekends in the winter, few hours of gaming, watch a movie or 2 a week.
During the vacation periods I would do less except the summer before final year when I worked on my final year project, and typically spring break was busy finishing course work and starting exam revision.
During my PhD I would have to work longer hours to make progress. 70 hour weeks without the long undergrad vacation periods was the norm. In fact summers were the busiest times when students were gone and you could concentrate on your own work.
The last 15 months of my PhD I worked 70 hours a week at least (some weeks clocked over 100 hours...) with about 10 days off in total including weekends.
I'm now working and do about 46-48 hours a week, much better
