“Our family is so grateful to what the Dr. Phil show, and your staff, Justin, and everybody has provided to us,” says Ken, who appeared on the show in 2012. “We’re totally convinced that if we hadn’t been part of your program five years ago, that my daughter wouldn’t be with us today.”

TELL DR. PHIL YOUR STORY: Is Dr. Phil your only hope?

When Ken appeared on the show, his daughter, Tiffany, revealed that she was using heroin “to feel normal.”

Watch the video above to see Tiffany’s update. And, see more updates on Friday’s episode. Check here to see where you can tune in.

TELL DR. PHIL YOUR STORY: I'm Living A Nightmare!

Young Woman Shares Turning Point That Made Her Decide To Quit Drinking