I’m not even sure how many hours of lost sleep I’ve accumulated over the years. The loss is due to stress and anxiety about exams, presentations, wondering if I’m good enough.
It doesn’t end; but you do learn to cope and deal with it and try to manage it by reducing your stress through sleep, meditation, exercise, and trying to eat better.
When so much of your time goes towards your career goals, you have little time for dating. The caveat is if you get lucky enough to meet someone through your work.