Jennifer Aniston reportedly prefers to keep diaries instead of going to therapy.

The former 'Friends' star has vented all of her frustrations and problems on paper since the age of 13, and has allegedly filled six notebooks with her happiest and most painful memories, including all the details about her divorce from Brad Pitt.

A source told America's Star magazine: ''Jen has been keeping journals since she was 13 years old. She considers them to be her therapy sessions.

''Jen had never mentioned her journals before, but she says there are six of them now. They're all simple leather diaries, locked away in a safe in her home.

''Every boyfriend, every relationship, her friendships, her work, her family - all of them are dissected on those pages. Jen is not the type to get into huge, verbal altercations with her boyfriends; her way of dealing with relationship issues has always been to write in her diary, then have a discussion. That way she always has the upper hand in fights, and never loses control.''

However, the actress - who is engaged to Justin Theroux - who is engaged rarely reads her old entries.

The source said: ''I think she finds it cathartic to write everything down in detail, get it off her chest, and then turn the page and move on.''