Your credit limit is the amount of money you have access to through your credit card and can range up to $100,000. When you use a credit card, the amount of money spent becomes the balance, and the amount of available credit is adjusted to reflect that.
A high credit limit gives some people the illusion that they have more money and makes it easier to spend more than they can afford to pay off the card, ultimately leading to credit card debt. Choosing your own credit limit when you apply for a credit card, or requesting a lower limit on a card you currently use can help reduce the risk of this scenario.