Amanda and her two sisters, Valeen and Tiffany, were dangerously addicted to heroin and would lie, steal and trade sex for money to buy drugs, when they allowed Dr. Phil cameras to follow a day in their lives.

Now, 16 months later, Amanda reports that all three are sober and doing great.

“It hasn’t been easy,” Amanda says in the video above, but says staying sober is possible. “I haven’t stuck any substance in my body in 16 months."