I strongly felt that the professional life is always having first prioirity than any other so you had studied well and hard than anyone else. Regarding personal life, yes it is too having the simialr priotity but not much than professional. In personal life, if you make any sort of mistakes, everybody who are part of your personal life can easily forgive you but in professinal life, there are always a few people like your boss, your client(s) etc... who can not tolarate your mistakes. So I think, even though it is looking like your job is suffering your personal life, you need to plan it for not to caught in such circumstances. Am I wrong?
