It is very hard to find the right balance between personal and professional life, but not impossible. The truth is that you can't have one without the other. If you don't work, you don't have money to enjoy your time in your personal life, nor the possibility to start learning and doing new things. If you only work, work, work, you will it futile after a while, or at least depressing if you don't have hobbies and people to invest your resources in. I guess the best way to balance thing is to force yourself to do every day something that relaxes you and disconnects you from the 9-17 routine.