What's the noun for ambition? Here's the word you're looking for.
ambition
(uncountable, countable)Eager or inordinatedesire for some object that confers distinction, as preferment, honor, superiority, political power, or literary fame; desire to distinguish one's self from other people.
(countable) An object of an ardent desire.
A desire, as in (sense 1), for another person to achieve these things.
(uncountable) A personal quality similar to motivation, not necessarily tied to a single goal.
(obsolete) The act of going about to solicit or obtain an office, or any other object of desire; canvassing.