Instruct: Classify Amazon reviews into positive or negative sentiment
Query: must see self improvement video!

I work as a master sales professional($250,000-$500,000/yr+) and think I have a pretty solid moral/ethical compass, in part, because of self improvement tools such as, "the secret." You owe it to yourself to seriously study and listen without ANY distractions or interuptions, IF you're serious about self improvement....