I always believed in the power of the mind, "Mind Over Matter" and things of this nature. Read this article and then think about your attitude towards certain suppliments before you begin to take them. If you already believe that they will "work" then half your job is done. A lot of people seem to think of the placebo effect as a bad thing. I think differently. Maybe after you read this article you will too!
http://www.usatoday.com/tech/science/ethics/2005-04-07-placebo-effective_x.htm?csp=N007&RM_Exclude=Juno
http://www.usatoday.com/tech/science/ethics/2005-04-07-placebo-effective_x.htm?csp=N007&RM_Exclude=Juno