Derek is a high school student who is currently taking a course in personal finance. He knows that he should be managing his money from
his part-time job better. He has learned about saving and budgeting, but he
continues to spend all of his money on his car and going out with friends.
He knows that someday hell have to be more responsible, but right now
he thinks he should just enjoy being a carefree teenager. Why is it
important for Derek to manage his money well now instead of waiting until
he's older?