At the end of the week, transfer all your purchases to your monthly expense record worksheet. On this worksheet, you will have a comprehensive view of all expenses for the month and how much you spent in each category such as food, household, and medical just to name a few. You will also record your monthly expenses such as utilities, car payment, credit card payments, and investments.
Now we have reached the make adjustments phase, subtract your expenses from your income and if you have some money left over at the end of the month you have got yourself a budget. Realistically most people will not have a workable budget at this point, again it's not really your fault if you don't have a budget, because nobody ever took the time to show you how to set up a budget, much less help you stay on a budget. It doesn't take a rocket scientist at this point to figure out that you should reduce your nonessential spending habits and that's what they usually are is habits, they are your wants, not your needs. Pare your expenses down so you have some money left over at the end of the month and you now have your first monthly budget.