Initiative: The power or ability to begin or to follow through energetically with a plan or task; enterprise and determination. ref: initiative n. 1. The Free Dictionary by Farlex
Drive: a vigorous onset or onward course toward a goal or objective. ref: Definitions.net (30. drive)
Ambition: Ambition refers to motivation or a strong urge to achieve something. ref: Your Dictionary, The Dictionary You Can Understand
All three of these, i.e. initiative, drive, and ambition, are components of motivation.
“Motivation is the inner power or energy that pushes toward acting, performing actions and achieving. Motivation has much to do with desire and ambition, and if they are absent, motivation is absent too.
Often, a person has the desire and ambition to get something done or achieve a certain goal, but lacks the push, the initiative and the willingness to take action. This is due to lack of motivation and inner drive.”
– an excerpt from “What Is Motivation and How to Strengthen It” by Remez Sasson; click over to read the entire article.
Initiative, drive, and ambition are also very valuable in job seeking and career growth, as may be ascertained if you read the article “Job applications: Selling your skills.” After having read that article, you just might wish to explore the entire web site on which that article appears; if so, go on over to Catherine’s Career Corner.