The Queen Mother had a strict maxim for royal conduct: 'Never complain, never explain, and rarely be heard speaking in public.' It worked very well for her, ensuring that when she died aged 101, it was as a deeply beloved figure in Britain and around the world. Her daughter Queen Elizabeth has followed a similar maxim, and it's worked very well for her too as she's become the most respected and longest-serving monarchs in history without ever giving a single interview. But the Queen's grandson Prince Harry sadly didn't get the discretion memo. Or if he did, he rejected it in favour of the new strategy: 'Always complain, always explain, and never stop yapping, whining, preaching and trashing your family.' Now, just when we assumed that the man who insisted he had to leave Britain to protect his privacy had exhausted every lucrative avenue of invading his own privacy, he's written his memoirs. But the Queen's grandson Prince Harry sadly didn't get the discretion memo. Or if he did, he rejected it in favour of the new strategy: 'Always complain, always explain, and never stop yapping, whining, preaching and trashing your family.' Pictured: Harry and Meghan during their Oprah interview The Queen Mother (left) had a strict maxim for royal conduct: 'Never complain, never explain, and rarely be heard speaking in public.' It worked very well for her, ensuring that when she died aged 101, it was as a deeply beloved figure in Britain and around the world. Pictured: The Queen Mother with the Queen (center) and Princess Margaret (right) The news sparked yet another torrent of headlines and my own gut reaction, posted on Twitter, probably summed up most people's response when they heard about it: 'You've got to be f*cking joking???' But then I realised it's not actually that surprising. Why would someone whose only currency now is airing dirty laundry about his family to any media entity that will pay him enough, NOT write a book flinging yet more mud at them? To be blunt: Harry's a sell-out, and this is just another example of him selling out. It's sad, pathetic, and totally unnecessary, and it will obviously cause yet more pain to his grandmother who is still mourning the loss of her husband Philip. But Harry doesn't care about that. Like his wife Meghan, he doesn't care about anyone but himself. The statement from his publishers Random House was comical in its delusion. 'In an intimate and heartfelt memoir from one of the most fascinating and influential global figures of our time…' it began. Sorry, WHAT? I wrote recently that I hoped Harry and his brother William might make peace after they came together for their mother Diana's statue unveiling in London. But given this latest news, why should William have anything more to do with the brother who constantly betrays him and his family in public in such a shameless, shameful manner? Harry's timing, as always, is horrendously selfish. Pictured: Prince Harry and Prince William at the unveiling of a statue of their mother Diana in July