Overrated:
Getting stressed out
Having tons of shit that you rarely use
Jiberish
Being "indie"
Jeans
Branded clothing
Axe
Poorly made food
Facebook
Being biased/not thinking before speaking
Underrated:
Being calm
Dressing nicely
Smelling good
Bicycles
Marijuana
Being healthy
Talking to people that you haven't met before
Exercise
Not being impressed by everything
Venturing outside of social norms
Tortillas
Thinking critically