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If Jennifer Aniston decides to one day have a child, it will be on her own terms.

During an interview on CBS This Morning Sunday, the Wanderlust actress complained that it's "very narrow-minded" for people to assume she's unhappy without a baby to nurture. "That doesn't measure the level of my happiness or my success in my life, in my achievements, in any of that."

The actress, who's currently dating Justin Theroux, 40, added that she doesn't give "a crap what other people think" and she's happier "than I've ever been."

At 43 years old, "I feel great," Aniston told host Gayle King. "I feel like I'm 30. I honestly didn't start to feel my best until was in my 30s. Physically, I started eating better and taking better care of my body, in terms of being physical and exercise."

"I think it's important every year to celebrate your birthday and be excited about it," an exuberant Aniston told King, 57. "I'm 43 and it's great!"

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