It was one of the images of the twentieth century: two boys, walking behind the coffin of their mother, Princess Diana. Billions wondered what the princes must be feeling - and how their lives would play out from that point on.

For Harry, this is that story at last.

Before then, Prince Harry was known as the happy-go-lucky Spare to the more serious Heir. But grief changed everything.

At twenty-one, he joined the Army but was soon more lost than ever, suffering from post-traumatic stress and crippling panic attacks. Above all, he couldn't find true love.

Then he met Meghan. The world was swept away by the couple's romance and wedding. But in the face of sustained press intrusion, Harry saw no other way to protect his wife and children than to flee his mother country. Over the centuries, leaving the Royal Family was an act few had dared. The last to try had been his mother. . .

Written with raw, unflinching honesty, Spare is full of insight, revelation and hard-won wisdom about the eternal power of love over grief.

It was one of the most searing images of the twentieth century: two young boys, two princes, walking behind their mother's coffin as the world watched in sorrow - and horror. As Diana, Princess of Wales, was laid to rest, billions wondered what the princes must be thinking and feeling - and how their lives would play out from that point on.

For Harry, this is that story at last.

With its raw, unflinching honesty, Spare is a landmark publication full of insight, revelation, self-examination, and hard-won wisdom about the eternal power of love over grief.

Prince Harry wishes to support British charities with donations from his proceeds from Spare. The Duke of Sussex has donated $1,500,000 to Sentebale, an organisation he founded with Prince Seeiso in their mothers' legacies, which supports vulnerable children and young people in Lesotho and Botswana affected by HIV/AIDS. Prince Harry will also donate to the non-profit organisation WellChild in the amount of £300,000. WellChild, which he has been Royal patron of for fifteen years, makes it possible for children and young people with complex health needs to be cared for at home instead of hospital, wherever possible.

In April 2011, four soldiers - each a veteran of recent conflicts, who suffered devastating injuries in the line of duty - set out on an extraordinary challenge: a two-hundred mile trek, unsupported, to the North Pole. Joined by patron Prince Harry, the charity founders, a polar guide and a film crew, the team achieved their goal despite facing hurdles an able-bodied athlete would baulk at, and having seen their resilience tested to the limit. They returned with a story that proves strength of mind can be every bit as powerful as strength of body, and as an inspiration to us all.