First, when it comes to a budget you have to have an idea of what amount of money you are going to make each year, month, week, and even day in some cases. You also have to know how to properly use extra money that was not figured into your budget. It is always better to figure on making less and spending more than making more and spending less. Second, if you struggle with budgeting, then using budgeting worksheets might help you. These can be printed out or just kept on your computer if you prefer. Most of the budgeting worksheets that are out there will break everything down into the categories for the bills that you need to pay. This is very helpful and will allow you to stick to the budget you set up for yourself.
Cut out. Lots of us pay for things we do not even use. This is another mistake that gets easier to make with so many automated payment plans. Do you keep a gym membership that you do not use? Replace that with a brisk walk, weights, or a stationary bike. You will not have to make monthly payments, and you may find it is more convenient.