Here is another great talk from TED: It a 3 minutes answer to the question "What leads to success?". It can be summarize by the picture below:

The full video description followed by the YouTube link is below:

Why do people succeed? An unmissable 3-min. talk from the TED Conference on the real secrets of success (Hint: Passion, persistence, and pushy mothers never hurt) Delivered by Richard St. John (Recorded February 2005 in Monterey, CA. Duration: 3:40)