John Travolta has promised that he will not be badmouthing other stars in his forthcoming autobiography.

The Saturday Night Fever actor revealed that he wants his book to focus on the positive aspects of his life, rather than letting it spark new feuds with old enemies.

"No one should be worried. It'll focus on the positive," Travolta told WENN. "I've had about five lifetimes in one. I feel so lucky to have had the life I've been given and it continues to be spectacular."