Ever since stepping back from his role as a senior working royal in 2020, Prince Harry has made a number of shocking claims about his life and treatment within The Firm.
While the revelations vary between his sour relationship with Prince Charles to the breakdown of his bond with his brother, Prince William, there is one key theme that he has spoken about time and time again.
Harry has been very open over the years about the effect that his mother's death had on his mental health as he was just 12 years old when Diana was killed in a car crash.
The prince has previously revealed how he keeps his late mother close and how he is instilling her memory in his own children.
And, according to Diana, Princess of Wales' biographer Andrew Morton, Harry uses another method to do this.
Love the royals? Sign up for the Mirror's daily newsletter to get all the latest news on the Queen, Charles, Kate, Wills, Meghan, Harry and the rest of The Firm. Click here to sign up .
Andrew Morton spoke to The Mirror's podcast, Pod Save the Queen, about The Duke of Sussex and how he involves his mother in his life.
Morton said: "I think that Diana's influence has lasted longer than anybody thought because her torchbearers in life, William and Harry, have not forgotten her and have held concerts in her memory.
"Harry himself says that he never makes a decision without referring it to her in a spiritual sense.
"She marked a turning point in the way the Royal Family behaved and through her behaviour helped to modernise and make more human the Royal Family.
"So it wasn't big handbags, white gloves and standoffish. It was more touchy-feely than it had ever been in the past. So she made the Royal Family more relevant to modern times."
Speaking about Harry and Meghan's decision to step back from The Royal Family, Morton revealed that their planning started much earlier than the originally thought.
He told the podcast: " Harry was having conversations in a London hotel with Oprah Winfrey back in November 2018, just six months after they'd been married.
"So they were thinking about a different direction of travel pretty early on.
"The irony is they had been given the keys to the first-class lounge when Prince Harry was given the position of Youth Ambassador to the Commonwealth.
"This was effectively the Queen's way of saying 'you do the rest of the world, leave William and Catherine to do the UK where they will eventually be the Heads of State.'"
Prince Harry was previously very open about the struggles he faced after his mother's death when he co-created the mental health documentary series 'The Me You Can’t See' with Oprah Winfrey for Apple TV.
The series saw Harry tell Winfrey that the trauma of the loss caused him to suffer anxiety and severe panic attacks from ages 28 to 32.
Speaking to the camera, The Duke of Sussex revealed that the pain of his mother’s death led him to use alcohol and drugs to “mask” his emotions and to “feel less like I was feeling”.
He continued: “I was just all over the place mentally, every time I put a suit on and tie on … having to do the role, and go, ‘right, game face’, look in the mirror and say, ‘let’s go’. Before I even left the house I was pouring with sweat. I was in fight or flight mode.”
Elsewhere in the programme Harry spoke in searing detail about his relationship with his father, Prince Charles. He said: "He’s treated me the way he was treated, so how can I change that for my own kids?
"My father used to say to me when I was younger, he used to say to both William and I, ‘Well it was like that for me so it’s going to be like that for you.’
“That doesn’t make sense. Just because you suffered doesn’t mean that your kids have to suffer, in fact quite the opposite – if you suffered, do everything you can to make sure that whatever negative experiences you had, that you can make it right for your kids.”
