I was working at a call center, and applied to become a supervisor, I didn't get the position.
My supervisor at the time gave me some offhand feedback about how I was approaching other people and coming off as too cocky because I was really really good at my current role, I was #1 out of over 1000 agents on my call metrics.
Not sure if it was just the right person, the right time, the right method of delivery, whatever, but it finally clicked for me. That one piece feedback changed my whole personality and has given me so much opportunity over the last 20 years.
I got the supervisor position the next time I applied.
Edit: Just wanted to add that teenagers are stupid, including myself.
Is this happening? Probably