What is my "spine"

My "spine" or the thing that I strive to accomplish throughout my life  is to make everyone around me happy and form myself into a better person in the process. I have been trying to accomplish this since kindergarten up to today. I have been trying to make friends and be the true meaning of a friend to everyone that I meet and try to give a good impression to people that I will probably never see again like a person sitting on a plane or someone in a theatre. This is my spine and I will never give it up.