Never lose a holy curiosity. Try not to become a man of success but rather try to become a man of value. He is considered successful in our day who gets more out of life than he puts in. But a man of value will give more than he receives.
As the Sandwich Islander believes that the strength and valor of the enemy he kills passes into himself, so we gain the strength of the temptation we resist.
The leaders we revere and the businesses that last are generally not the result of a narrow pursuit of popularity or personal advancement, but of devotion to some bigger purpose. That's the hallmark of real success. The other trapping of success might be the by product of this larger mission, but it can't be the central thing.
I do not deny that many appear to have succeeded in a material way by cutting corners and by manipulating associates, both in their professional and in their personal lives. But material success is possible in this world and far more satisfying when it comes without exploiting others.