Caitlyn Jenner has revealed that she once contemplated taking her own life.

While promoting her tell-all memoirs, The Secret Of My Life, the reality star revealed that she thought suicide was a "way out" as she struggled with her "long journey" of gender transition.

"My life was hell," she confessed. "I said, 'You know the easy way out. I got a gun, just go in the room and let's get it over with."

The I Am Cait star said that she struggled with the media scrutiny she was subjected to as she underwent surgical procedures during her transition.

After gender reassignment surgery in January she said she was now "so happy I can't stand it".

"I got to a place in the end where I had no more secrets. I don't have a secret left," she said.

The 67-year-old has opened up about her journey by reflecting on her life before and after her transition.

However, the tell-all has been met with anger by her ex-wife Kris Jenner. The former Olympian had reportedly claimed that throughout their 24-year marriage, his wife had always been aware of his desire to transition but had tried to suppress it.

The 61-year-old momager reacted with outrage to the claims. She said her ex-husband was intent on disparaging her in public in a bid to generate interest in the book and profit by exposing the intimate details of their life together.

But Caitlyn replied: "It's not what people thought it would be. It's not a tabloid book, it's not a book about the Kardashians, it's not a book about Kris. It's about my journey over 65 years and how I got to the place I am today."

While there were reports that the book's sales had slumped, the author said she was pleased with the response to it.

"The reaction has been extraordinarily good," she insisted.