It's always a good thing to learn from experience, especially when it comes to relationships!
But wouldn't it be cool if you could somehow convey that knowledge to your younger self?
Maybe that's too Back to the Future-esque, but the question has come up, especially for pop star Miley Cyrus, who sat down with Amanda de Cadenet for an upcoming episode of The Conversation.
In the newly released talk show, various celebs chat with host Amanda for an interview that entails a lot of deep introspective questions - things that would be discussed in private between two female friends.
Miley's asked what she would tell her 14-year-old self now that she's grown and sexy, and the response that follows is one that shows the singer/actress is wise beyond her 19 years.
"This too shall pass... that's something I so needed to remember," the young starlet says.
At 14, Miley was in a relationship with Nick Jonas, so it's possible she was looking back on that.
And Miley isn't the only artist GlobalGrind feels would love to give some sound advice to their younger self. We've even taken it one step further and speculated on what that advice might be.