What did you learn in college?

I'm just curious. I am in my second year of college and I feel as though I am growing and learning so much about myself and about life in general. Would love to hear from you all:

What are some of the most important things you learned about yourself/others/the world when you went through or came of of college.?

And/or what were some important things you learned in early adulthood in general, even if you didn't go to college?