"I had a few moments in my life that I decided I wanted to change," she recalls. "I think when I went into treatment, I decided to talk about the reasons why I was in treatment, and that was when I was 18. When I was 19, I knew I had to get sober and so that was another pivotal moment."
Lovato also became a co-owner of CAST Centers in Los Angeles, the facility where she sought treatment in 2011.
"I just feel like I have a bigger purpose than just singing and I want to make sure I use what I have for good," she said.
“Yeah, I think I found her, and I think I'm still finding her,” she told ET of herself. “And that's why I'm not diving into anything with anyone. I value my time by myself now, and I value my time with my friends. And I just have learned to really appreciate my me time and getting to know myself and learning to fall in love with myself before I fall in love with anyone else.”
Simply Complicated premieres Oct 17. on YouTube. For more from Lovato, watch the clip below