ive added these to a LaTeX document, and really liked the original post as well.  Thanks Mark P .
-my biggest tip is meditation.. ive been doing it for 20 years and most of the time i dont have thoughts..
-another one is training both hemispheres to work concurrently. for this i will practice writing with both hands at the same time,
.....using the same kind of pen or pencil in both hands, and practice three modes.
1: mirroring text (two streams of the same thing in simultaneous)
2: sequential (each hand writes one word by itself, simultaneously .. ie left hand writes the while right hand writes quick, left hand writes brown while right hand writes fox, left hand writes jumps right hand writes over..
3: one letter each hand same word in serial processing (2 cores.. ha ha ha)
you can actually feel your brain itch while you're doing this..
there's more but thats enough to start one off... i'm convinced at this point i dont really have conscious thoughts very often, ive been meditating so long..  when i do have one it feels very jarring, like almost as if there's physical resistance to it..  i just --live-- in the moment and work through my goals and deadlines and so on but in a non linear intuitive sense.  it's hard to describe...