I was lying in bed and I began to think about how to improve thinking processes and what the best of each (NT,NF,SJ,SP) category would be, and how to achieve that. In reasoning with myself I approached it from each side of the function, literally.
I found that if you were able to control both your I/E and your P/J you could control the positional qualities, as well as the directional qualities of the functions you most rely on. Thus making these the most effective without trying to change fundamental views of your thinking process like N/S and F/T.
These would be them:
So how does this sound?