The article talks about how the self, or our idea of a self, is actually not stable. Scientifically it is something more of a not-self, or "anatta" as the article states. It's always in flux, shifting, changing.
they’ll no longer define themselves by their thoughts or be limited by a fixed idea of who they are.
Their possibilities will be endless." - Aimee Kuvadia
Whenever you get down about yourself or feel unsure of yourself, focus on that fact that your self is not constant; the you today will not be the same you in two years.
Think back to two years ago: are you still interested in the same things? Do you dress the same? Are you in love with the same songs, or even same person? Food for thought...