Sir Paul McCartney believes fame forces you to change.
The 71-year-old music icon - who has been dubbed the most successful songwriter in UK chart history - admits being thrown into the spotlight can cause stars to go off the rails, but he stays level-headed by reminding himself of what he was like before his prominence.
The Beatles have made an annual turnover of £43.5 million.
The 'Hello Goodbye' hitmakers' business, Apple Corps Limited, has amassed the staggering figure - £2 million more than they made in 2012 - landing Sir Paul McCartney, Ringo Starr, and the estates of late members John Lennon and George Harrison £5.1 million each.
Yoko Ono says John Lennon ''fell in the battlefield''.
The 80-year-old artist married the iconic musician in 1969 but insisted after his murder in 1980 she never thought of herself as a grieving ''widow'', instead wanting to carry on their battle for ''freedom and justice'', seeing her late husband as a fallen soldier.