It's better to underestimate and have money left over in the end than to overestimate and be left empty handed
There are plenty of honest people out there making concentrated efforts to change their financial lives. Sadly, though, these efforts are not always met with results. With a realistic outlook, however, you can all but ensure the steps you take will be met with improved financial health.
How much do you have coming in?
The answer to this question is extremely important in trying to organize a workable budget for you and your family. If you truly want to gain something from this experience, it's time to be honest with yourself and accurately estimate how much is coming into your bank account on a regular basis. Be sure to take taxes into account, and—if your income is somewhat flexible—be conservative. It's better to underestimate and have money left over in the end than to overestimate and be left empty handed.
Expect the unexpected
While it's important to have the usual categories outlined in your budget—groceries, rent, insurance, utilities, etc.—it's just as important to include categories that more often than not will be left empty. This is because when those categories are not left empty, they are usually filled in a significant way. By saving in an effort to tame these unusual events, you can be prepared when they come. Try putting money away for car maintenance, so that when something comes up later, you aren't left scrambling. It's a good idea to also save for unexpected medical situations. If you have enough saved to cover your insurance deductible, you'll be in a better position when it comes time to pay it.
How are you with cash?
For some people, cash is the easiest form of payment and much preferred over automatic withdrawals, writing checks or credit card payments. For others, the author included, cash is a financial trap. With so many transactions taking other forms today, cash can sometimes feel like “free money” and can easily be whittled down. Don't let seemingly small transactions add up without your knowledge. If you do deal in cash, be sure to track it just like you would any other form of expenditure.