Patrick Willis has established himself as one of the best defensive players in the NFL. And while the 49ers linebacker is physically gifted, it's what's inside of Willis that has brought him to new heights.
Willis has been selected to the Pro Bowl in each of his first five NFL seasons after enjoying a standout college career at Ole Miss. Things haven't always been easy for the Tennessee native, though, and he's had to push himself every step of the way.
Willis is living proof that great things come to those who don't waver in their beliefs. It's all about finding the power inside, which is quite obvious in the Duracell video about Willis above.