Thankful is the debut album by American pop recording artist Kelly Clarkson, released in the United States by RCA Records on April 15, 2003, (see 2003 in music). "Miss Independent" was its first single, followed by "Low" and "The Trouble with Love Is". Initially, the album had been scheduled to be released in November 2002, however, Clarkson's demanding schedule and difficulty finding tracks that suited her taste and image forced the album to be delayed several times. By the time the album was released, over six months had elapsed since "A Moment Like This" had reached number one.
The album debuted at number one on the US Billboard 200 selling 297,000 copies. "Miss Independent" went on to be a top ten hit in the United States. Thankful has sold 2,745,000 copies in the United States, receiving a 2× platinum certification from the Recording Industry Association of America (RIAA). In Canada, Thankful was certified platinum for 100,000 copies shipped by the Canadian Recording Industry Association (CRIA).