Now that you know that you are unique in every way, now you must know what makes you really happy. The clue is anything that you want to do without expecting or waiting for rewards, is what will make you complete, thats your purpose. For example you love teaching, and teaching makes you happy inside and even though how many student you'll have its ok and you don't care about the payment or you're not after the rewards, then thats you're purpose. The secret is to able to find it inside you.
We are made differently and you have something that nobody else have.And that something you have and nobody else have, is the same thing you have to share to the people around you. You must put it in service. Helping and sharing is the real purpose why you are here....You're life will be senseless if you can't give service to others. Serving others is Serving God your maker and you're purpose is to serve and praise him with everything he gave you.
The Problem is, people today are more focused in serving only their selves, what they want and what they need. And they live their lives as slaves; slaves to world. People focus on work more to earn more, but they will not get more, people focus on their social status, they buy things that will outstand them to their society. They compete with each other for power and wealth. They can't see that the POWER they want belongs only to the Almighty One and wealth is acquired through HIM. Anyone who is blinded by the world's greed will never be happy. They will live their lonely lives and worst they will die lonely and incomplete. The only true happiness is when you find your self serving God in the way you are born to do.Don't make proud of your selves, stay under HIS power and you'll find abundance of happiness.
Your purpose is to serve Him in your own way. Get in touched with your self, He's there waiting for you to serve him. Free your self from the slavery of the world. You don't need those things, it will be given to you abundantly, what you need to do is to stay under his power and serve him by serving others. There is no other higher purpose.