The Horrible Bosses actress, who is said to be dating Justin Theroux, explained that playing Rachel Green in the show for ten years until 2004 gave her "so much".
Aniston, who starred alongside Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry and David Schwimmer on the sitcom, told Daybreak: "Friends is there all the time, especially in the UK. It gave us so much.
"It was one of the greatest things we all ever did, and it might very well be one of the greatest jobs we'll ever have."
The 42-year-old star also admitted that she has grown calmer with age.
"Most women I know do [feel calmer], to tell you the truth. I mean, how they always say youth is wasted on the young because there's something about being in your 20s where you're sort of wide-eyed and bushy tailed and there's something you just haven't quite gotten a grasp of," she explained.
"And everybody had said to me when you hit 40 you're just going to feel a complete calm, and it's true."
Watch the trailer for Horrible Bosses below: