This stands true for me since i've shut down from people, i feel more confident without their negative vibes bringing me down. I was tired of being excluded, and looked down on all while being friendly, polite, & supportive. I'm much more confident now. Self respect has taken away the insecurities. I'm also getting a very sharp intuition as i get older that i listen very closely to.
INSULTS are the last resort of INSECURE people with a CRUMBLING position trying to APPEAR confident.