A positive attitude causes a chain reaction of positive thoughts, events and outcomes. It is a catalyst and it sparks extraordinary results.
Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.
Happiness is an attitude of mind, born of the simple determination to be happy under all outward circumstances.
But the attitude of faith is to let go, and become open to truth, whatever it might turn out to be.