First, track your spending and expenses for the next 30 days. You can begin by recording all your purchases on a weekly expense report worksheet that you fill out each day. Save your receipts from each purchase and then record a description of the purchase, the amount, its category, and how you made the purchase; whether by cash, check, or credit card.
Your next task is to identify all your expense areas whether they're irregular or not. Set up two columns for each pay period (as shown below); IMAGE NOT AVAILABLE HERE The first column called "Bdgt" is the portion of your income that each expense area will be assigned. The total of this column should never exceed the income you receive for that period. The second column "Used" shows a negative amount and is a record of what has been spent from that period. The beauty of this system is that it will always give you a running balance.