Hi Daniel, if you can get a copy of the movie, Kelly's Heroes, check out the character Oddball. His character was a hippy tank commander and he was full of positive (laid-back?!) energy.
But seriously, we all need a good shaking up once in a while so that we can re-energise, re-focus and be passionate once again. Since you like track and field, I would like to recommend the book "Unbroken" by Laura hillenbrand.
And lastly, for a good laugh and to make us think about the word "Passion", I leave you with this: