Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: one of the best

I am a psychologist and have read many books about intimate relationships, and this one ranks among the best. In addition, I recommend If It Hurts, It Isn't Love (Spezzano) and the Mastery of Love (Ruiz). These are among the best, in my opinion, because they are easy to understand, inspiring, and insightful. Enjoy.