Brian remembers how Mr.Perpich is telling him how to always stay positive and that you’re the best thing you have. What Mr.Perpich means by that is that you’re your own best thing. Positive thinking might help Brian stay confident instead of negative thinking that will stress him and make him loose his motivation. You have value in your brain and body that will help you do something. If you have confidence, you will be able to do things other people without confidence can’t. Brian without motivation could just commit suicide and with confidence he would try to survive as long as possible. So just believe that you can do it, and if you never give up and you just might survive.