I must be Happy

Why I become like this? My attitude change damn lot…this is not the real me! The real me is cheerful, happy, pure ( as many people said), etc, etc. but now, I m emo, keep day dreaming, sad, etc. what happen? i must be happy!!! I don’t care, I have to be! I always tell people to be happy, but me myself is not, I have to give a good example! Let me tell you guys, after pei yi said that I m emo, I have decided, I have to make myself happy, no, not make, but I have to be nature happy. Thanks Pei Yi! Thanks a lot.