Eileen Tyrrell, 26, moved to New York City with $3,000, no full-time job, and everything she owned in a rented van. Today, she earns around $53,000 as a bookstore manager and freelancer. She has built a meaningful life while keeping her monthly spending low.

This is an installment of CNBC Make It’s Millennial Money series, which profiles people across the globe and details how they earn, spend and save their money.