Titles are hard, without a doubt, and a good title can make a book (or, at the least, catch an agent’s or editor’s eye).
Consider this list at The Penguin Press.
Would Alex Haley’s Roots: The Saga of an American Family have been as successful as Before This Anger?
What about Stephen Crane’s original title for The Red Badge of Courage: Private Fleming, His Various Battles?
Which from the list do you think are the most disastrous?