I think it's really important to have a purpose in life because there is a correlation between purpose and a healthy state of mind.

Think about it, if you wake up everyday and you're just not happy about your life or the day at hand, then I think you haven't found your purpose. Once you wake up with a purpose in mind, then you can't wait to get up, to start your day! 

Once you wake up and you have a purpose in mind then its going to drive you each and everyday. Also your not going to develop your purpose overnight. My purpose has been developed through everything Ive experienced in life 

What is your purpose?