Overall PE hasn't really changed me as a person. I've been confident in myself plenty before PE, probably in an arrogant and condescending way. I was never scared of talking to girls, or not confident while talking to them. Same thing about fitness, I was a semi-professional football player when I started PE and so fitness wise PE hasn't helped me with that.
What it has helped me with is my focus, and is proof that I can commit to something other then video games. It's taught me a lot about myself (not everything though!) and has helped me understand that consistency in lots of things. It's also helped me to establish a personal routine (even though I don't follow it) but it has helped me in those aspects.
Also, guys have tried to make eye contact with my one eye down there while I'm traction wrapping, while I don't particularly like it, I do find it flattering