If your job is unsatisfying, you can experience burnout even working 50 hours a week. That said, it's a good idea to have free time even if you love your job -

If your job is unsatisfying, you can experience burnout even working 50 hours a week. That said, it's a good idea to have free time even if you love your job - my father's a workaholic and he had heart problems, now he makes time to go fishing and is much better off.