Anyone have 10,000 hours to spare?

I recently finished reading a book called Outliers by Malcolm Gladwell (The Tipping Point, Blink) and its about what makes people successful. It's a fascinating read. Gladwell argues against the belief that individuals by their own sheer force of will or genius make it by themselves. Rather, people are successful because of cultural legacies, how their parents seized opportunities, or even what month they were born in. He writes on what makes Asians good at math, why it was good to be Jewish in the latter part of the 20th century, and how a man with a 200 IQ has done nothing notable besides be on the game show 1 v.s. 100.

One of the points that Gladwell makes is that people who are successful in life are those who put in a lot of time in their field so that when opportunity arose; their abilities and events culminated into something phenomenal. For example, Mozart started composing when he was 6 years old. His first compositions weren't all that great (what great things did you do when you were 6?) but he kept working at it so that when he was 21 years old-he was composing the masterpieces that we still hear today. Or the Beatles were playing in concerts in Hamburg non-stop until they hit it big. Or Bill Gates spent all his free time on a computer in the library purchased by a mom's club. So how much time does it take to be successful? 10,000 hours.

The question, therefore that I ask you, is what are you willing to put in 10,000 hours in to become an expert in? Have you already put in those 10,000 hours? Are you on your way?