David Cameron struggled to complete his eagerly awaited memoir, and it was reported that he suffered from a writer's block.

It's not hard to understand why the Brexit mess gets bigger every month.

His companion interview shows that the former Prime Minister, who had largely evaporated from public life following the collapse of his political career as a result of the Brexit result, has indeed taken it very seriously.

One passage stands out: "I think about it every day, every day I think about it, about the referendum and the fact that we lost and about the consequences and the things that could have been done differently, and I do it myself desperate worries about what's going to happen next. "

The end came for David Cameron just one year after winning a historic conservative majority in 2015 that defied all polls.

He was on the rise, had expanded the attraction of a party that had not been able to gain a majority for a generation, and expanded and promoted issues such as gay marriage and foreign aid.

He is painfully aware that his only legacy will be a referendum he could not win.

The book I will try to counteract the widespread view that he has shattered anger at the first sign of trouble.

As prime minister, of course, he was no stranger to unbelievably tough demands, whether it was the air raids in Libya, the ongoing war in Afghanistan, or the independence referendum in Scotland.

David Cameron and Boris Johnson in 2016
Mr. Cameron said that Boris Johnson and Michael Gove "devastated" his government's record

But, as he admits, he was often regarded as the chill-ing prime minister, for whom setbacks seemed like water from the back of a duck.

This book is not about the referendum itself – which he considers inevitable – but about his efforts to renegotiate Britain's membership and subsequent election campaign.

Mr. Cameron was criticized by others in the Remain campaign for refusing to directly attack his Tory colleagues on the Leave side and avoiding so-called "Blue in Blue" attacks. In the interview, he lets out some of his frustration.

Boris Johnson and Michael Gove "left the truth at home" with the 350 million pounds for the NHS message distributed across the bus.

They were "horrific" and "devastated" the records of his administration. For Mr. Gove, who was his close personal friend, the gap is obviously still deep. It is believed that Mr. Cameron still feels cheated on by his friend, who plays such a major role in the holiday campaign.

Many on his side of the argument will feel no grief for him, victims – they will say – his own arrogance. He was the prime minister who wanted to stop "beating on Europe" and was consumed at the end of it.

David Cameron calls Michael Gove "lying". in his book
The gap between Mr Cameron and Mr Gove, who were former friends, is clearly still deep

Surely he is painfully aware that many remnants will never forgive him and says he is regularly shouted out in the street by angry members of the public.

He clearly senses that the Forsaken Side is using tactics by heart. And with those who led the election campaign and are now in charge of the government, he criticizes them for preparing Parliament and opening the door for a Brexit without agreement.

Until the book's release next week, Brexit's story may have taken more turns that no one could predict.

We now know his story – but how it all ends is out of his hands.