"So before I start this next song, I just want to tell you guys a little story. Really fast, not going to take up too much time," Lovato said. "A couple years ago, it's no secret, I had to go into treatment for a bunch of issues. I mean, I could name them all [but] we we ain't got time. I had to go away to treatment and I want to let you know that this treatment center is called Timberline Knolls. It was here in Lemont, Illinois."

"Every time that I play Chicago, I don't know what it is," Lovato continued. "Maybe it's because I felt so much love here and I've been through so much. I just want you guys to know that when I come to Chicago, I never forget that this place is the place that saved my life.

"If anybody out there is dealing with an eating disorder, substance abuse, cutting, bullying, whatever it is � I want you guys to know that I've been through it and that I've gotten through it and you can do it too."