It's Supposed to be Happy

Well today is my fourteenth birthday. Everyone in my class wished me a happy birthday all day long (they wrote it on the chalkboard and signed too) and talked about how awsome my party is going to be. When I got home my family called and said happy birthday and some said that they had presents. My Mom and Dad gave me my first bass guitar and my aunt cameover to give me money. Why aren't I happy. I got everything that I could have wished for, but I am only acting ungrateful and spoiled. I just can't seem to be or act happy. Today I just feel dead inside. For about half a year I thought that I wouldn't live to my next birthday, but here I am. Shouldn't I be happy about making it through, rather than mopeing?