[INSPIRON]

Great desire. Wanting something really bad!

Edit:
I feel like i must add in a few ideas more on motivation in general.
The masses are primarily motivated by extrinsic motivators, such as material possessions and money. The great achievers are motivated intrinsically, by their dreams, desires and passions. External motivation is short lived, while internal motivation is nearly impossible to exhaust until the goal is achieved.
One "secret" to motivating yourself is discovering what you will fight ofr when the going gets tough. Ask yourself the question: "Why must i suffer?" A world-class athlete, for example, will answer this question with the vision he has carefully consturcted, and he'll keep on fighting. Since the masses lack this mental clarity and have no reason to suffer, they quit as soon as the pain kicks in.