Final answer:
Managing money based on the belief that there are limits to how much money you can earn is true.
Step-by-step explanation:
The text suggests that managing money is based on the belief that there are limits to how much money you can earn. This statement is true. When managing money, it is important to recognize that income is finite and there are limits to how much you can earn. This understanding helps in making wise financial decisions, budgeting, and planning for the future.