Having a positive mental attitude is asking how something can be done rather than saying it can't be done.
Morality is simply the attitude we adopt towards people whom we personally dislike.
ATTITUDE, MORALITY IS SIMPLY THE ATTITUDE WE ADOPT
Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.
Happiness doesn't depend on any external conditions, it is governed by our mental attitude.