Congratulations! You are taking step towards having a purpose in your life. Because the first thing to do to have something is knowing that you don't have it and at the same time you need it. The most important thing which is expected of you is to keep going. Move on!
Every body have a purpose in his or her life it is just you did not find a way through , all you can do is look in to yourself deeply and find what you love or want most in life and then work on it. Trust me every body once in while will have such kinds of feeling in oneself all that matter is you always put something positive in your mind replace the negative once and for all and plus the one who created us give he gave us a purpose it is just you did not find yours so get up drop everything that weighs you down do what is expected from you. I hope this helps. Thanks