Workaholics miss the point...They try to fix problems by throwing sheer hours at them. They try to make up for intellectual laziness with brute force. This results in inelegant solutions.
If all you do is work, you're unlikely to have sound judgements. Your values and decision making wind up skewed. You stop being able to decide what's worth extra effort and what's not. And you wind up just plain tired. No one makes sharp decisons when tired.
Workaholics aren't heroes. They don't save the day, they just use it up.
(from Fried & Hansson)