Introspection, especially amongst those of us who grew up without siblings (*raises hand*), gives plenty of time for finding oneself. But it also gives your mind plenty of time to overthink everything. Layer in some social influence that everyone encounters as teens and boom; it’s easy to forget where you even started.
I respect the sharing of something so personal — and applaud the milestone. It’s never too late to find yourself in the rubble of it all. (This is where I would want to drop in a Phoenix analogy.)