Taoism
The Tao Te Ching expressed the concept (in chapter 44) as:
Fame or Self: Which matters more? Self or Wealth: Which is more precious? Gain or Loss: Which is more painful? He who is attached to things will suffer much. He who saves will suffer heavy loss. A contented man is rarely disappointed. He who knows when to stop does not find himself in trouble. He will stay forever safe.
Read more about this topic: Detachment (philosophy)