We know the credited author of Magical Me is Gilderoy Lockhart. Did he actually write the book, or did he trick or force or enchant someone else to write it?
On the one hand, it's uncharacteristic of Lockhart to actually do any work if he can trick or magic someone else into it, but on the other hand, the one thing he loves to do is boast and brag, and it seems that's what this book is about (along with his others).
Is there any indication he actually wrote this (and his other books) or that, instead, he found a way to get others to do the work for him?
(And, yes, I know if he tricked Nearly Headless Nick into writing it, then he'd have a ghost writer - disappointed I got to that joke before anyone could make a comment on it, aren't you?)