Only you can come up with a good name! Titles come from the story, not from some anonymous person on the internet! Titles are not as important as some writers think, also - your title might change many times between your first write and your final draft!
Think about your story - what is going on and who are the people involved?
Check out the Related Questions for help with your book, too!
If you need inspiration for a title for this particular book, why not start with a "working title" which is applied to a book (or movie, etc.) in progress. I suggest: Zombie Apocalypse 263,593,856.
You're doing it backwards ... The title comes LAST. Finish your book and you'll find your title from what you have written.
Apocalypse Now.
The book of Revelation is also known as the Apocalypse.
Revelation
You're going about this backwards, I'm afraid. The title comes last - after you finish the book. You can find a good title once you have everything written down.
the title is called this book is not good for you
Use whatever title you want to -- you are the author! Titles are the least important part of your book.
Now, Voyager Apocalypse Now
The Apocalypse is found in the Book of Revelation.
It might be - if your book is about the boy next door and nothing else. Before you "take" a book title, google it and see if there are already a lot more books and movies with that title. I see two movies and a book on Google, so you might think of a slightly different title if you plan to sell this book. If you're just writing for fun, it's a good title!
A good title would depend on what the book is about, if it has no plot or story line and is only about gymnastics then call it gymnastics but if it is not then create a unique or nice name talking about what the story line is {what the book is about}.