Actress Kristin Cavallari, star of the hit U.S. reality TV series "Laguna Beach," has confessed her goal for the new year is to stop swearing so often.On New Year's Eve, the 19-year-old told People magazine she intends to focus on her admitted problem with swearing during 2007."My goal is to stop swearing," Cavallari said. "You can say I have a bit of a potty mouth."To celebrate the end of 2006 and the start of the new year, Cavallari made her first visit to Miami to party with her boyfriend, "What I Like About You" actor Nick Zano."It's been such an incredible time, Miami is just so much fun," the TV star said of her first visit to the Florida city.People said Cavallari and Zano rang in 2007 at the Miami nightclub Prive, where they were joined in their reveling by NBA star Shaquille O'Neal and rapper Nick Cannon.