“My brain is still there, I still have the energy.”
The media mogul behind shows like The X Factor and American Idol admitted he previously debated freezing himself.
He added: “I actually was going to freeze myself. I thought, ‘Why not?’
“Then I found out they chop your head off, so you come back in two thousand years as a floating head.
“I’m like, ‘No, I don’t want that.’ ”
Simon also reflected on how his loved ones – and being a father – keep him grounded.
He said: “I’d be lost if I hadn’t had Eric, and Lauren, the two of them. I’d reached a point in my life I felt lost, I was getting very down.
“When I hear Eric laugh and I see him happy, there’s nothing that compares to that. Everything about you as a human being changes.
“You’re there to protect him and guide him, hopefully steer him in the right direction.”
Meanwhile, Simon recently revealed he talks to himself and his “guardian angel” about peace daily.
The TV personality told Britain’s HELLO! magazine: “I talk to myself every day and say, ‘I just want peace.’
“I have a guardian angel, and I talk to it about peace. That’s all I want.”