Cut cable TV / satellite TV- most people could save $100 per month
Stop eating out. Make all of your food at home, including lunches that you can take with you. Most people can save hundreds of dollars per month.
Stop paying for entertainment. No movies or ballgames for a while until you get your bills under control.
Arrange with your bank and credit card companies to “skip a payment” on some of your bills. Many companies will allow you to skip a payment once a year. You can use the payment that you got to skip to pay a different bill to catch up
Cancel travel plans. You need to stay home, not spend money traveling away from home. Even driving trips to stay with relatives cost money.
Stop using credit cards. Keep cash in your purse or wallet and spend that instead of using credit cards. It is harder to spend “real” money, so you will tend to spend less and notice how much you are spending.
Drive less. You will save money on gas plus wear-and-tear on your car. If you are out-and-about less, you’ll encounter less opportunities to spend money too.