American singer, Miley Cyrus has revealed that she has had to have therapy over the criticism she received as a child star. The singer, 30, shot to fame in 2006 when she landed the Disney Channel sitcom Hannah Montana, which followed the adventures of a schoolgirl living a double life as a famous pop star. Miley, who was just 13-years-old when she achieved global fame, has  dealt with the ‘painful memories’ that early stardom left her with in recent years. …