Be happy for no reason

The mind is made up of opposing energies that spark and create the fire of life. When we're standing in the light, then we have a shadow. If we don't have a shadow, then we're standing in darkness. The shadow is the part of us that we're ashamed of, that we don't want people to know about.
When you exhibit so-called positive and negative traits, you are not flawed; you are complete.

Deepak Chopra
Power Freedom and Grace

A book well worth buying