(Excerpt from How to Live by Derek Sivers)
Shallow happy is having a donut.
Deep happy is having a fit body.
Shallow happy is what you want now.
Deep happy is what you want most.
Shallow happy serves the present.
Deep happy serves the future.
Shallow happy is trying to conquer the world.
Deep happy is conquering yourself.
Shallow happy is pursuing pleasure.
Deep happy is pursuing fulfillment.