People that excel in one aspect of being in the world (sports, arts, business) can excel in all areas of their life – families, hobbies, etc. The skills, focus, and determination they develop serves them well through-out. They don’t accept anything less than high standards in all areas of their life, nor should they.
What about workaholics? Working harder and longer hours doesn’t make you good. It makes you emotionally & physically retarded. If being at work is getting you away from facing another issue or situation in your life, then you aren’t really there to work. You’re just hiding.