I don't know anymore

I don't know about anything any more just a few months ago I knew what I wanted and I was happy and than all of a sudden I feel as if I don't know how to feel I'm not happy I'm confused about if I'm sad I don't feel anything and it's getting more and more difficult to stay here in this world I know I have to keep my head up and all I really don't know what to do anymore my bestfriend I can talk to her but she says she know when really she goes thru something way different from what I feel I feel as if I have no one and I can't say anything