Include all variable expenses now, car maintenance, electricity, heating, these can vary throughout the year you need to calculate them and come up with an average monthly amount. None essential expenses like eating out coffee at Starbucks, weekend getaways, extravagant vacations, fancy clothing, motorcycles, ATV's, if you use them, write them down, realize these are wants, not needs. Now total these all up, fixed expenses, variable expenses, and non_essential expenses,there you now have your total expenses.
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.