I think the first approach is basically good only for when you have a strong pattern match hit to a long-studied condition like depression or bipolar etc.
The second approach is time consuming and can get some basic low-level energy/attention flows healthy.
The 3rd approach I think is under-rated and the most useful of all. Though system 1/system 2 is too crude a map. You need a map with more pieces. I'm currently trying to do an inventory with my goat-crow-rat map from https://www.ribbonfarm.com/2018/02/15/make-your-own-rules/