The personal problems that had begun to show while the Beatles were making the "White Album" continued over the next year, as did problems with Apple Corps. McCartney stopped using cocaine, while Lennon and Ono tried to stop using heroin, but this did not help mend feelings between the Beatles. They finished two more albums, "Let It Be" and "Abbey Road", but the band broke apart soon afterwards, with Paul McCartney announcing in 1970 that he was starting a solo career.