Don't run up student charges.
Don't eat veggies from the cafeteria (I got a bad bug from eating it once)
Don't go to a commuter school.
Don't stay out until 2 on school nights.
Get your organization "the hook up" from stronger organizations.
Being nice comes with a price. If someone was dying on the street of thirst, I bet if you give them a drink they'll surely stab you in the back. Why didn't I carry that wisdom from HS to college?