What An Entrepreneur, A Singer And A President's Nephew Wish They'd Known Ages Ago (VIDEO)

It's something Oprah loves to ask during her interviews: What advice would you give to your younger self? When Arianna Huffington, Grammy-winning singer Alanis Morissette and JFK's nephew Timothy Shriver appeared on recent episodes of "Super Soul Sunday," Oprah asked each of them this poignant question -- and received some very revealing answers.

Arianna
"I would say, 'Stop worrying,'" Arianna says. "There is so much unnecessary worry, so many unnecessary self-judgments, so many negative fantasies about the future."

Alanis Morissette
"I would say, 'Everything's going to be OK, and you can be young,'" Morissette says. "I would come in as a 40-year-old and say, 'I got this. You can go play. I got this.'"

Timothy Shriver
"I would tell my younger self to focus on finding quiet," Shriver says. "I think we live in a culture of distraction, and silence is a way to find the center."

The season finale of "Super Soul Sunday" airs Sunday, Dec. 21, during a special time, at 7 p.m. ET on OWN. (The episode will not be live-streamed or available on demand after air.) Find OWN on your TV.