The very worst missionary (by Jamie Wright)

(Amazon UK link) Years ago, I used to follow a blog called ‘Jamie: the very worst missionary’. It was honest, refreshing and extremely well-written. About a year ago I realised I had not seen any new posts from it, and discovered that it had been deactivated. But I also discovered that the author, Jamie Wright, had published a book of the same title. So I added it to my wishlist, and was given it for my birthday a few months ago. 
I had seen reviews saying that this book was ruined by foul languag...