United Kingdom, May 20 -- Henry Winkler is "living proof" that "all things are possible".

The 79-year-old actor believes that perseverance has been one of the keys to his career success.

Speaking to students at Georgetown University in Washington, D.C, Henry explained: "I grew up in New York City on the West Side, and I grew up dreaming about being an actor. I don't know how it came into my mind; I don't know how it came into my body.

"But if people were born to do something, I was born to try."

Henry recalled struggling with geometry classes at school. However, he refused to give up and he eventually earned the grades he needed to progress.

The veteran actor shared: "I took it in regular school, summer school, regular school, summer...