President Joe Biden’s son Hunter will chronicle his personal struggle in the upcoming memoir “Beautiful Things,” according to his publisher. The book will center on the younger Biden’s well-publicized struggles with substance abuse, said Gallery Books, an imprint of Simon & Schuster. The book is slated to come out on April 6. “In his harrowing and compulsively readable memoir, Hunter Biden proves again that anybody — even the son of a United States President — can take a ride on the pink horse down nightmare alley,” author Stephen King wrote for the book. “Biden remembers it all and tells it all with a bravery that is both heartbreaking and quite gorgeous. He starts with a question: Where’s Hunter? The answer is he’s in this book, the good, the bad, and the beautiful.” Biden wrote in his book: “I come from a family forged by tragedies and bound by a remarkable, …