“Be content with what you have;~ Lao Tzu, Tao Te Ching
rejoice in the way things are.
When you realize nothing is lacking,
the whole world belongs to you.”
Lao Tzu here advocates to be satisfied with whatever you have and be happy with the current circumstance. This makes some sense. Research shows that happiness is somehow a subjective mentality. Thus, it is fine to be content with what you have.