What makes a person valuable, how do I know I am worth it?

You are valuable because you are a human being on this earth! You are so worthy of all the good feelings you are wanting to have. You are a magnificent being with so much greatness and goodness and lovely things within you. Never doubt your worth or whether you are valuable enough because you are - you are now and always have been. No matter what anyone else has made you feel in the past you are valuable. Nothing actually can make you valuable - no one person is more valuable than the other - you are just born valuable :)