Cognitive psychologist Amanda Crowell looks at the mental blocks that prevent us from achieving our goals and shares, from personal experience, ways to outwit these obstacles. This talk was filmed at TEDxHarrisburg. All TEDx events are organized independently by volunteers in the spirit of TED's mission of ideas worth spreading. To learn more about TEDxSHORTS, the TEDx program, or give feedback on this episode, please visit http://go.ted.com/tedxshorts.