Make a monthly budget & avoid credit cards
A single income family needs to make a proper monthly budget and ensure that they do not spend excessively. Such a family will have to cut down on a number of things and may have to make certain compromises as well. A single income family cannot afford to dine out often or wear expensive clothes.
It is highly recommended that you avoid using credit cards. They may fulfill your needs in the short-term but they will create huge problems in the longer run. Credit cards with high interest rates take out a massive chunk of your monthly salary.
Buy things in bulk
Similarly, you should avoid going out in the car unless or until it is important, as it will help you save money by consuming less gas or petrol. If you purchase grocery in bulk you can avail discounts and at the same time save multiple trips to the market. Be on the lookout for sales and promotional offers which can also give you more value for your money.