However, it was no risky bet – the book is already topping the pre-sale charts in Amazon US. It is being released on Tuesday in about 20 countries and 10 languages.
“Reliving everything has been exciting, heartbreaking and emotional, to say the least,” Spears told People magazine.
The emotional turmoil meant the 41-year-old singer only recorded a small segment for the audiobook, leaving the rest to actress Michelle Williams.
“There are a lot of hard things to read in the news about my book,” she wrote on her Instagram this week. “Then I woke up this morning and said it’s all relative… nothing really matters at this point.”