I dont understand what happiness is anymore. I used to be happy,

I dont understand what happiness is anymore. I used to be happy, but things changed. People changed. My life changed. Things went downhill. I lost all my happiness; & im not too sure how to get it back .. im not even too sure if i ever truely will. I believe happiness just isnt the same once it's taken away .. sure, i have my times where i get happy. I smile. I laugh. I even cry from laughng too hard. All signs of happiness; most people would say. But to me; i dont believe it's real happiness. I dont feel the pure happiness that i once did. I want that back. I want that feeling of happiness to come over me again; i want to know what i feels like. I want to be truely happy; and not just have the occasional "happy" times.