As a good Christian person, I think I have only ever thought about my thoughts in terms of right and wrong thoughts.  I have never thought about my thoughts in terms of quality = valuable thoughts vs. junk thoughts.

i think I heard about this idea on a podcast.  Junk thoughts are not great thoughts.  Junk thoughts are a waste of time.  Junk thoughts take up space and energy.

Don’t get me wrong – I’m not saying that right and wrong thoughts aren’t important.  Monitor your thoughts.  Monitor wrong thoughts.  Monitor junk thoughts.  Just don’t waste your time with Junk Thoughts.