1. All debt is bad.
When used properly and managed well, taking on debt can be a way to help you achieve financial goals. Money borrowed to buy a home or go to college, for example, is typically considered good debt because these kinds of loans typically come with lower interest rates and positive tax benefits. However, debts you can't afford to pay and debts with high interest rates are both considered bad debt. Credit card balances are the most common type of bad debt, which can also include high-interest personal loans.
2. You should pay off all your debt as fast as you can.
If you want to become debt-free, make a plan and prioritize paying off bad debts over good debts. If you're holding low-interest debt that may have tax benefits, such as a mortgage or low-interest student loans, you may be better served by paying off a portion of those each month while still putting money toward an emergency fund or other financial priorities, such as investing for the future. Sacrificing saving for retirement in order to pay down low-interest debt may mean that you lose out on the potential for compound interest and have less money than you hope for in retirement.