Quit spending money on things you don't need, which has a corollary: really sit down and decide what it is you need. Many people assume they NEED cable, a TV, internet, cell phones, a car, you don't. You can adapt and do without. They are conveniences.
One way that worked for me to get out of debt: Pay the minimum on all bills but one (yes, I know that goes against what everyone says.). Pay as much as you can to the debt with the highest interest rate. When it's paid off, move to the next debt and pay what you were sending to the old debt, in addition to the minimum payment. Keep that going til its gone.