Melissa Joan Hart has some words of wisdom to share with 20-year-old pop star Miley Cyrus: don't overshare.

In her new memoir, aptly titled "Melissa Explains It All," the 37-year-old star details her dark past of drugs and Hollywood hook-ups, E! News reports, but she doesn't recommend doing so quite yet to the controversial former Disney princess.

"The business has changed from when I was young," Hart told MTV News in a recent interview. "There weren't things like social media there wasn't the Internet, there wasn't TMZ and there weren't all these outlets and they need content to fill so they're digging more into people's personal lives and following you around and looking at everything from 'Was your underwear sticking out of your jeans?' to 'Did you take the trash out?'"

Hart went on to address "people like Miley Cyrus," and perhaps anyone in the young star's position.

"She's incredibly talented and she got a lot of notoriety for, you know, acting like a young girl onstage and I think she'll be alright," she said, referring to Cyrus's latest antics and media scandals. "You can't judge her on that, you have to wait another five to ten years to see where she goes. When you're a teenager or a young adult, you think that everything you have to say is the most important thing ever and the funniest thing ever or the coolest thing ever and you share it all."

Despite the conflicting criticism and praise Cyrus has received from the media, the general public and fellow celebrities, from Lorde to Kanye West (both of whom love her latest image and musical style), she has never expressed any regret over becoming an infamous pop culture icon. From grinding on Robin Thicke at the VMAs, showing tons of skin in racy photoshoots with Terry Richardson and on the cover of Rolling Stone, smoking joints on-stage and openly discussing her love of marijuana and how it's "so much better" than ecstacy, many have noted that Miley Cyrus seems to know exactly what she's doing. As the saying goes, no press is bad press.

"I worked for five years on something that was a character where I didn't really get to be completely the creative person that I wanted to be so at this point I did the work that I had to do," Cyrus told BBC News this summer. "I had to kinda make my money and do all that so now I don't have to worry about necessarily any of that. I can just make music because I love it. It doesn't have to really be driven by, 'I wanna build up my fan base,' because I have an amazing fan base that's followed me."

Now, Cyrus feels free to make her own decisions, which have largely paid off. The bizarre music video for "We Can't Stop" was her vision, as was "Wrecking Ball," earning her millions of Vevo views and charting hit singles. Not to mention, her latest album "Bangerz" debuted at No. 1 on Billboard 200, far outselling her previous album "Can't Be Tamed" which she released under Disney's Hollywood Records.

But although tabloids like In Touch have claimed that Cyrus is "out of control," the star insists that it couldn't be further from the truth. Nonetheless, Melissa Joan Hart seems to be keeping her eye on Miley Cyrus.

"You've got to be careful about what you put out there and what you really want people to know," Hart told MTV News. "And keep some for yourself! Keep some secrets so you can write a book later on."

Cyrus has already written a memoir, "Miles to Go," so perhaps she'll want to save some experiences for a future tell-all.