Before a controlled high dose Psilocybin experience I "felt" my emotions: Anger, Fear, Frustration.
Afterwards, I gained the ability to observe and "catch" my emotions in-flight. Not sure if it was neuroplasticity induced by the substance, or "you don't know what your brain can do until you know it".
I liken it to previously having Ring 1 access to my thoughts, now I have Ring 0 access.
Definitely persistent: DRAMATIC improvement in my happiness and wellbeing.
YMMV
Easier said than done, of course!
Another way of putting is that I'm self aware that the "qualia" of feeling angry is being projected into my conscious experience as a token, rather than simply experiencing "feeling angry" qualia.
I liken it to being able to set a breakpoint on my emotions, and then single step through the root cause of that emotion.
I seriously didn't have that functionality in my brain before that hero dose trip (even after doing many years of meditation).