In an interview to air this Friday on NBC's "Rock Center," Cesar Millan bravely opens up to Kate Snow about his attempted suicide, the events that led him to consider it, and the renewed sense of purpose he discovered with a second chance at life.

"What makes you wise in life is not the successes," the 43-year-old says. "It's when you go down and come back."

Three years ago, Millan hit rock bottom after a series of unfortunate events led him to take "a whole bunch of pills." Despite a successful television series as host of "The Dog Whisperer" on the National Geographic Channel, as well as a growing empire of related accessories, three hurtful events created a downward spiral of depression. From "Rock Center":

"His beloved pit bull Daddy died, days later his wife of 16 years phoned to tell him she wanted a divorce, and his relationship with his two sons soured as they blamed him for the divorce. And Millan discovered his inattention to his business had left him without a cent."
Thankfully, Millan's sons discovered his suicide attempt and called paramedics. When the dog expert awoke, he surrounded by patients who were also fans — an anchor of support that allowed him to rise from depression.

"That gave me — a sense of belonging," he said. "I got a sense of purpose. I like to have a purpose in life."

Millan now has a new — and very popular — television show "Leader of the Pack," which features families competing to adopt a rescue dog. He hopes the program can "save abandoned dogs from incarceration and euthanasia and raise awareness of the desperate situation these dogs live in around the world."

Something tells me these animals are giving just as much back to Cesar. You can watch the full interview on "Rock Center" this Friday, June 14 at 10 p.m.. Check out a preview below.

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