Actress Jennifer Aniston reportedly prefers to write a diary, instead of going for therapies.

The 45-year-old has vented all her frustrations and problems on paper since the age of 13, and has filled six notebooks with the most happiest and painful memories, reports contactmusic.com.

"Jen has been keeping journals since she was 13 years old. She considers them to be her therapy sessions. She 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," said a source.

The notebooks also have details about her divorce from actor Brad Pitt and all her previous relationships.

"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," the source added.