Perpetual devotion to what a man calls his business, is only to be sustained by perpetual neglect of many other things.

— Robert Louis Stevenson

Love this quote that Shawn Blanc highlighted as part of his Focus Course and he follows it up nicely with his own take on it:

May devotion to our business not be sustained by neglect of our health, relationships, values, and even our own happiness.

— Family Balance by Shawn Blanc

Both worthy additions to DailyMuse.