The Duke of Sussex will be revealing a number of “mistakes and lessons learned” from his life in a memoir to be published next year.
Prince Harry announced the publishing deal with Penguin Random House saying he would share all the “highs and lows” and be “accurate and wholly truthful”.
Prince Harry, who with his wife Meghan Markle, stepped back from royal duties last year, will be donating the proceeds to charity.
Penguin has not disclosed the details of the deal.
Harry has said in a statement that he will not be writing the book as the “prince he was born as but as the man he has become”.
He also said: “I’ve worn many hats over the years, both literally and figuratively, and my hope is that in telling my story – the highs and lows, the mistakes, the lessons learned – I can help show that no matter where we come from, we have more in common than we think.
“I’m deeply grateful for the opportunity to share what I’ve learned over the course of my life so far and excited for people to read a firsthand account of my life that’s accurate and wholly truthful.”
Markus Dohle from Penguin Random House has described the duke as being among “world-renowned leaders, icons, and change-makers we have been privileged to publish over the years”.
A press release from the publishing company has described the book as “intimate and heartfelt” and “honest and moving”.
It also said: “Prince Harry will offer an honest and captivating personal portrait, one that shows readers that behind everything they think they know lies an inspiring, courageous, and uplifting human story.”