(ABC News) -- When John Travolta's son Jett died in 2009 from a seizure, the actor said that loss was the "worst thing that's ever happened in my life."
The "Pulp Fiction" star, who turned 60 Tuesday, sat down with BBC's Barry Norman at the Theatre Royal in London recently and admitted he "didn't know if I was going to make it" after his firstborn's death.
Jett Travolta, who died at 16, was autistic and had a history of seizures.
The legendary actor admitted that after the tragedy, he "didn't want to wake up" and that "it took a lot to get me better."
Travolta said it was the people of Scientology that got him through over a two-year period.
"They didn't take a day off, working through different angles of the techniques to get through grief and loss, and to make me feel that finally I could get through a day," he said.
Travolta and his wife of 23 years Kelly Preston are parents to two other children - daughter Ella Bleu, 13, and son Benjamin, 3.