January 25, 2018 08:00 AM

Billy Bush is one proud pop.

The former Today show host is opening up about his 19-year-old daughter Josie, who will celebrate three years of sobriety Friday.

“It’s a hero’s journey,” says Bush, 46, in this week’s issue of PEOPLE, on stands Friday. “I watch her and I’m blown away by the strength of character she has.”

Billy Bush with his family
Billy Bush/Instagram

Initially, Bush, who is also dad of 13-year-old Lillie and 17-year-old Mary with wife Sydney, says he was hard on himself about Josie’s struggle.

Billy Bush
Christopher Patey

Watch People Features: Billy Bush:  Rebuilding My Life, available now, on PeopleTV.  Go to PeopleTV.com, or download the PeopleTV app on your favorite mobile or connected TV device.

“Part of me was beating myself up, like, ‘How did I miss this?’” he says. “But forget about that — we had someone to take care of and someone to help find her way. Still, I cannot give credit to myself. It’s all Josie. She’s found an amazing sober community. I like watching them without drugs or alcohol. They do fun things together.”

  • For more on Billy Bush, pick up this week’s issue of PEOPLE, on stands Friday

And the former Access Hollywood host says he’s reveling in watching his three daughters grow into healthy, happy young women.

“It’s incredible,” says Bush. “They’re starting to take off. The journey was great, but seeing them where they are and making awesome decisions and taking care of their lives is fascinating. It’s awesome.”

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