VIDEO: Whitney Houston Of Past Problems: "Don't Be Worried Anymore"

Whitney Houston, after performing in front of a 5,000 people in New York City's Central Park on Good Morning America Wednesday, wheezed and gasped through a brief interview in which she said her problems of yesteryear are behind her, thanks to her strong religious beliefs.

"I'm overwhelmed," Whitney told GMA following her performance, adding that an interview she did with Oprah Winfrey (slated to air Sept. 14) left her voice hoarse. "The love, the support, your prayers mean so much to me ... I never left, I never left."

When GMA host Diane Sawyer remarked that she was worried about Houston -- whose marital problems and rumored drug problems were well publicized around the time of their 2002 interview -- the I Will Always Love You singer told her, "Well, don't be worried anymore; if you know God, then don't be worried."

Houston said her faith and the love and support of her family has helped her comeback to relevance.

Houston's new album, I Look To You, is in stores now.