Determination would be inflict spirit, willpower is a motivation or encouragement from inside a person to do something, encouragement from yourself is much better than the encouragement that comes from outside and is the focus of attention and concentration when learning it all is definitely doable.
Motivation and Intention, this was the beginning of everything, like a home, motivation is the keystone. If the foundations are wrong, yes easy to collapse was his home.
Conclusion:
although the motivation usually comes from other people or the environment, but still the most powerful motivation and terrible it comes from within a person. The true intention and determination will make a great job being a great invaluable, energy focused more quickly, and more excitement is not dormant.