Sara Benincasa has some inspiring words over at Medium:
You must tell people exactly what you want from them if you have any hope that they will give it to you. I asked people to review my book (well, my publisher asked them to review my book) in the hopes that everyone would love it and write glowing reviews. As it turned out, there were good reviews and bad reviews and okay reviews and great reviews and awful reviews. BUT. Those good ones and great ones stood out to me, and I never would have gotten them if I had not asked people to read my book in the first place.