I legitimately think I am going crazy, like mental.

I legitimately think I am going crazy, like mental.

Something is seriously wrong with me, these thoughts in my head aren't normal and I don't know how to react to them. Thy are different to all the thoughts and feelings I have had before, I wouldn't really say they are like depressing thoughts or suicidal ones. They are more like "what am I doing here" "what's the point of living" I feel as f I am not me and like I'm just watching myself, like life's not real. I feel as if I'm living the last few days of my life but I'm not to scared or worried about it. As if its  inevitable . More often than not I feel as if someone is watching me. But I don't understand how I an get the feeling that I'm going to die, I mean I know everyone dies one day , however its more like I'm going to die this year, soon. I don't know how to explain exactly how I feel, my head is all messed up and I can't put how I feel into words. Its difficult to write down.