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2. "Chose the wrong major"
— Angie, works in education in NYC

Money mistake: "[I think I chose the wrong major] because I don't like business. Right now, I kind of changed programs. I am working with kids. I realize that I like that better. I spent a lot of money studying business."

Essential lesson: "If you're not sure what you want to study, just take your time and think about it. Because you're going to spend too much money on that. It's something you might be doing your whole life."