"Somewhere DA said that you should avoid having one thought more than once unless you want to."
so, If I want to, it's still ok to think them. (during the period that I decide to do nothing).
"If you are eating a wonderful dinner, listening to music, or talking to your wife and you are in your head fantasizing
about your upcoming vacation, then you are really not enjoying the dinner or music and you are not giving your wife the attention that she deserves."
I don't think am going to think about other fancy things while I am doing one.
And DA defined what "stuff" is, that for things does not belong to where it is, an open loop. Things like listening beautiful piece of music, enjoying a delicious meal won't be count as "stuff", perhaps?