Hello!  This a lot of material to process and understand!
In regard to the individual exercise with a symptom and the point/phase model:
Headaches migraine or escalated tension headache (always have some tension feeling in the head)
It is interesting to focus on where on the ladder I am and if it's a stress phase or not.
An interesting pattern the last three years was having a strong headache finishing up my work tasks/client work and packing for vacation for my birthday.  It's definitely from being in a stress phase working too much up until I leave for vacation, wanting everything to be tied up, wanting everything to be perfect for vacation, packing everything possible needed to make it comfortable, also checking the weather, etc as if I would be able to control that!  The end result is unfortunately having a headache start even before I leave for vacation and have it the first day or two of vacation, generally it is hard to relax in the beginning of vacation for me, wanting to/needing to come down from being so wound up is a challenge. It is a repetitive pattern, seemingly from being in the active stress phase.
Interesting add-on, though these headaches are not isolated to my birthdays or going on vacation, right before my birthday in 2020 had a negative interaction with a parent and felt major "not good enough" trigger and had all kinds of muscular tension/headache for my birthday mini vacation of three days, it was not very relaxing but glad I went away.
I already have an Eden Energy daily routine, tapping and breathing, stretching, have made more boundaries around work and before vacation, understand at all times that my symptoms have meaning and treat them with that approach through tapping, etc. I have built resilience, but need to keep working on my lifestyle regarding my work/life balance, authenticity,  and continuing to work on my deeper connections to my drive to push myself, the control and perfectionism, fear of judgment, not good enough, etc to really help heal.