liam McRaven knows a thing or two about courage and changing the world. In one of the most inspiring commencement speeches (full video below), Adm. McRaven advised graduates at his alma mater — the University of Texas at Austin — on how to change the world. Here are his 10 life lessons for grads on how

lking around in uniform with a board full of ribbons on his left chest make him feel totally embarrassed? Yueshu Aoi Written Sun This is Admiral McRaven: He's been a commander of Seal Team 4, a unit commander involved in the Gulf War, and has directed, and trained special weapons and underwater dem