Law of Attraction

... have you read the secret? Im a firm believer in trying to think positive, being a happy person makes more happiness.. yadda yadda. BUT- Im a bit hung up on the law of attraction of weight loss. If you believe and honestly think it, to your deepest being.. you will instantly lose, or manifest a lose 10 lbs, because you believe you will. REALLY?? I dont know about that. Im more abpt to believe I will gain 5 lbs by looking a cheesecake! haha Thoughts?