What am I doing.

I genuinely feel like i have zero purpose in life, I have no idea what I'm supposed to do about that because it really wouldn't make that big of a difference if I wasn't here but then again there would still be a difference so I guess that means that I do have a purpose. What is that purpose? I don't have a clue and I'm not sure that I ever will, but someday I might and that is what is keeping me going at this point.