05/15/2012 08:31 am ET Updated May 21, 2013

WATCH: Becoming Fearless About Relationships

What makes relationships work? In this exclusive Becoming Fearless video, Arianna Huffington and three high-profile celebs and authors share some of the love lessons they've learned over the years. As Arianna says, "It's critical to have a tribe of women friends whose advice you value and who can support you in good times and bad."

From actress and director Christine Lahti to authors Jane Buckingham and Christine Hassler, these all-star experts have mastered the art of being fearless in relationships while remaining true to themselves. "I think that the most important relationship you have is with yourself," notes Hassler. "The better that relationship is, the more confidence you have, the more able you are to not only attract a relationship, but to sustain it."

The 10-part Becoming Fearless video series is sponsored by Toyota Corolla and will run through August. Hosted by Arianna Huffington and inspired by her book "On Becoming Fearless," the series will explore how fear affects our lives -- while celebrating the strength, courage and resilience that result from overcoming it (or at least trying to).

During the course of the series, Arianna will be joined by noted individuals -- Martha Stewart, Sherri Shepherd, Dr. Phil -- as they examine fearlessness and its impact on love, money, parenting, work, health and beauty.

What lessons have you learned about fear and fearlessness? Comment below, or tweet us all about it @HealthyLiving using the hashtag #becomingfearless. Tweeters will be automatically entered into Toyota Corolla's Most Fearless Tweet Contest! (Click here for the Official Rules.)

To see the first video in the series -- "Becoming Fearless About Money" -- click here.



Arianna's Most Fearless Quotes