Jennifer Aniston’s Advice to Younger Self: Go to Therapy

Jennifer Aniston has achieved a lot of success in her 44 years, but the A-list actress, who sat down for a Glamour Q&A conducted by her "We're the Millers" co-star Jason Sudeikis for the magazine's September issue, says she'd still have a few words of wisdom for her former self if she could go back in time.

Aniston's advice for her teenage self is pretty standard – "Don't try so hard. Pay attention. Do your homework. Go to class." And she'd merely tell twentysomething Jen to not "fret so much," because she "did OK in my twenties." But she has plenty of tips for her thirtysomething self, and goes so far as to even suggest she seek mental help.

[See More Photos of Jennifer Aniston]

"Thirties. Thirties," the actress, who was infamously married to Brad Pitt from age 30 to 35, and arguably underwent one of the most intensely documented divorces in history, muses before really letting her younger self have it.

"Go to therapy. Clean up all of the sh-t. Clean up all of the toxins and the noise. Understand who you are. Educate yourself on the self."

When Sudeikis comments that learning about yourself is important in your 30s because, "at that point, anything that you thought was just a habit is actually you," Aniston seems to disagree, sharing a happiness philosophy.

[53 Swimsuits that Make You Look 10 Pounds Thinner]

"You can undo a lot of things," she insists. "If you're not happy, you can become happy. Happiness is a choice. That's the thing I really feel. Like with friends who refuse to get happy, who refuse to rise above the discomfort of where they’re at."

The actress credits her self-awareness for helping her find love and a healthy relationship with fiancé Justin Theroux.

"You actually deserve to have a family. Once you meet yourself, and truly love yourself, then you attract that. And look — I mean the two of us have found these two beautiful, loving, open people," she says, referring to Sudeikis's fiancé, actress Olivia Wilde.

In the interview, Sudeikis also reveals that after Wilde received blowback for a monologue she'd performed discussing her divorce from Tao Ruspoli and her sex life, Aniston sent her an encouraging note.

[25 Celebrity Hairstyles That Will Make You Want Bangs]

"I felt so strongly about it, when I heard what she was going through," Aniston says. "I was so pissed. Because I related to it — I related to that f--king feeling of people just wanting to rip down the powerful, beautiful woman who [speaks her mind.]"

However, Aniston's empathy doesn't just extend to the ladies.

"I don't like injustice," she states. "We're living in a time where, whether it's the Internet or tabloids, being sh--ty has become a sport. We're just grown-up bullies. We literally could not need to have our hearts more open in these times."

[10 Beauty Tricks That Make Guys Melt]

The funny girl, who plays a woman pretending to have a family in order to smuggle drugs across the border in "We're the Millers," expressed another life philosophy during her sit down — this one on parenting.

"I think when you have to become the parent when you're a younger person, you learn [paternal] instincts," she says, noting that Theroux has "amazing paternal instincts."

Could that mean there's still hope for an itty bitty Aniston baby yet? Pick up the new issue of Glamour, on newsstands August 6, to read the full interview.

More Celebrity Features on Yahoo!: