Could the part with the words be that your thoughts are so fast as to not be able to be precise?...like a bit of hyperactivity?As far as the constant thinking thing...I do that to...including telling thoughts to 'shut up'...it is annoying.I also get unsolicited negative thoughts.The not thinking anything at all may be a shutdown in your mind for self preservation...an extention of low energy or depression...I have no idea why you and I have these issues.But I do experience it ...pervasively.I am sorry and you aren't alone.------->(a hug)...(((internal disruption)))