You are never dedicated to something you have complete confidence in. No one is fanatically shouting that the sun is going to rise tomorrow. They know it is going to rise tomorrow. When people are fanatically dedicated to political or religious faiths or any other kinds of dogmas or goals, its always because these dogmas or goals are in doubt.
Nixon had three goals to win by the biggest electoral landslide in history to be remembered as a peacemaker and to be accepted by the 'Establishment' as an equal. He achieved all these objectives at the end of 1972 and the beginning of 1973. And he lost them all two months later partly because he turned a dream into an obsession.