There are a big difference between live a life with "purpose" and live with "valor". Few people live with both purpose and valor, but it's not true for most. Live one life with valor is live with comfort, happiness. Live with purpose is have a "bigger than life" goal, is leave your mark on world.
Someone who always have a lot of fun, but don't have any achievements, don't develop his skills more than he just need to survive and do a job just to survive or have more fun, comfort; live one life with valor, but without purpose. Someone who save lifes, discovery something that will help all humanit or do great things in anyway, but is myserable, unhappy; live one life with purpose, but without valor.
But it's possible to live with both purpose and valor, it's what Socrates call "life of analyzes" where you developed the reason and that reason have a purpose and content you at the same time. For him, it was not the best life, but the only life possible. Maybe, we fell lost when we don't balance these both aspects.