You know... I put the second option 20-30 I think it was... but looking back I think I must have been pretty close. I can actually remember the changes though.
Before age 7 when my parents divorced I was a bit of a clown and an extrovert. I liked people.
Age 7-19 I was most constantly INTJ
Somewhere around age 20 I began to have tons of feelings that I'd buried and ignored all throughout my childhood bubbling to the surface and became maybe an INTJ under stress, calling on Se and Fi most heavily, but didn't feel at all like myself. I made horrible decisions, cried a lot and had emotional breakdowns left and right while I tried to figure out what to do with all of this overwhelming excess.
Around 27 I finally found the balance I'd been looking for, oddly enough aligning with when I began learning Kung Fu. Probably not a coincidence.