By begging I mean: ask for help. Get your book-loving friends and fellow writers to critique your book description. Even better, ask them to write their own versions. Then you can “borrow” your favorite bits to create the final blurb. As for stealing, go to your local bookstore or library (or… online) and read through fifty book descriptions. Make note of what captures your attention. Also make note of what bores you. Steal the approach of the descriptions you like. Avoid the stuff that made you snooze.