What life skills have you learned in high school that will help you live independently after high school? Which skills do you think are essential for your success after high school?

I think the skill that i might use the most after high school and the rest of my life is the skill of talking in public, before high school i really would rather not to talk in front of people, omly with people i know. During High School I've had a lot of presentation in different classes, this has helped loose the fear of speaking in public and has helped me improve it