08/28/2012 08:22 am ET Updated Aug 29, 2012

Arianna On Aging (VIDEO)

"In a culture that values youth as much as ours does, time is public enemy number one," says Arianna Huffington. "Every new wrinkle or gray hair can send fear shooting through us."

In this exclusive Becoming Fearless video, Arianna identifies some of the deeper fears that lurk beneath the fear of aging and shares her personal insights on how to put this widespread fear into perspective.

Notes Arianna, "I'm lucky enough to have come from Greece, a country that honors and reveres old age."

"Arianna on Aging" is the final video in the 10-part Becoming Fearless video series, sponsored by Toyota Corolla. Hosted by Arianna Huffington and inspired by her book "On Becoming Fearless," the series has explored how fear affects our lives, and celebrates the strength, courage and resilience that result from overcoming it (or at least trying to).

During the course of the series, Arianna has been joined by noted individuals -- comedian Kathy Griffin, mogul Barbara Corcoran, E! News anchor Giuliana Rancic, "The View" cohost Sherri Shepherd -- as they've examined fearlessness and its impact on all aspects of life, including love, money, parenting, work, health and beauty.

What personal lessons have you learned about fear and fearlessness? There's still time to enter Toyota Corolla's Most Fearless Tweet Contest -- and win the grand prize of a trip for two to Chicago to meet Arianna Huffington in person! To enter, follow @HealthyLiving, use the hashtag #becomingfearless, and tweet about how you've overcome fear in your own life. The deadline for entry is 11:59:59 p.m. on August 31. (Click here for the Official Rules.)