Aaaand, there it is

He found out what's in Woodward's book.

President Trump on Friday preemptively attacked a forthcoming book from journalist Bob Woodward, despite previously praising him as a "very good writer" and agreeing to be interviewed for the Watergate reporter's latest book.

[...]

Trump's attack on The Washington Post author comes days after the first details of his forthcoming book about the president were released.

[...]

"The Bob Woodward book will be a FAKE, as always, just as many of the others have been. But, believe it or not, lately I’ve been getting lots of GREAT books!"

  The Hill

Not. Like Bolton and Mary Trump's books?

...but hey, do what you want...you will anyway.