My story in a nut-shell: I believe I have accumulated stress since childhood, and did not become aware of it until my mid-thirties.
In fact, I thought that the word stress was overused and I could not relate to it or else did not really want to relate to it, as my nervous system was always kicking in in high gear.
The wake up call came when I no longer had the energy to hangout with friends or family - all I wanted to do was rest and sleep, which I did.