Speaking to MTV News, the country star admitted that the intimate nature of her songwriting delayed the LP's release for nearly two years.
"I've been working on this album for two years and having written every song on this album and not having any co-writers making the concept of this album come together and sort of writing everything for this album within the concept, it actually all happened very naturally," she said.
The 'Fifteen' singer continued: "So I write songs about things that really intensely, emotionally affect me at the time I'm going through them."
Swift also remarked that her latest release gives fans insight as to the highs and lows of her life over the last few years.
She explained: "You know a lot of artists will take two years, or one year, or however many years it takes and they'll live life and then afterward they'll write their album about it. But I sort of write as life is happening to me, so all of these songs are snapshots of what I was feeling at that moment."
The musician previously stated that a run-in with a former boyfriend inspired 'Story Of Us', the last song that she wrote for the upcoming LP.
Speak Now is released on Tuesday.