1) Decisions, both good and bad, can have significant impacts and costs in our lives that may not always be gratifying. 2) The author discusses their own decision in 9th grade to improve their grades, which required sacrificing free time and stress but did not have a clearly positive outcome. 3) Harry Potter's decision to confront Voldemort cost him the death of his godfather Sirius Black, leaving him feeling like he had nothing left. President Obama faces harsh criticism and threats for his decision to become president.