How to be thoughtless? Find the quiet spot in the middle of the
   thoughts. Let the other thoughts talk as much as they like, but
   find the quiet spot in the middle of all of the chatter.

   You can do that by acknowledging the chattering, saying, "Yes,
   yes, I hear you, but not now please" - and let that voice go off
   into another room until it fades off. It's not hard, really.
   Practice helps.