The Duke of Sussex has agreed a publishing deal to write his memoirs and said he would do so “not as the prince I was born, but as the man I have become”.

The global deal for his “literary memoir” was announced by Penguin Random House, with publication expected in late 2022 and proceeds to be donated to charity.

Prince Harry, 36, said: “I’m writing this not as the prince I was born but as the man I have become. 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 first-hand account of my life that’s accurate and wholly truthful.”

The publishers said: “In an intimate and heartfelt memoir from one of the most fascinating and influential global figures of our time, Prince Harry will share, for the very first time, the definitive account of the experiences, adventures, losses and life lessons that have helped shape him.

“Covering his lifetime in the public eye from childhood to the present day, including his dedication to service, the military duty that twice took him to the frontlines of Afghanistan, and the joy he has found in being a husband and father, 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.”

Markus Dohle, CEO of Penguin Random House, said: “All of us at Penguin Random House are thrilled to publish Prince Harry’s literary memoir and have him join the world-renowned leaders, icons, and change-makers we have been privileged to publish over the years.

“Prince Harry has harnessed his extraordinary life experience as a prince, a soldier, and a knowledgeable advocate for social issues, establishing himself as a global leader recognised for his courage and openness. It is for that reason we’re excited to publish his honest and moving story.”

The book will be published in print and digital formats in the US by Random House and in Canada by Random House Canada. Transworld, an imprint of Penguin Random House UK, will publish the book in Britain, with additional publishing territories to be announced at a later date. An audiobook edition will be released simultaneously by Penguin Random House Audio. Terms for the worldwide agreement have not been disclosed.