Avoid accumulating new debt. Some debt is essentially unavoidable. For instance, only the very rich have enough money to buy a house in one lump sum payment, yet millions of people are able to buy houses by taking out loans and slowly paying them back. However, in general, when you can avoid going into debt, do so. Paying a sum of money up-front is always cheaper in the long run than paying off an equivalent loan while interest accumulates over time.