I budget my money mentally. I don't write anything down or work off a spreadsheet, but it works well for me. All my bills are set up to be taken almost straight after I get paid, so whatever I'm left with is mine, so it's not difficult to budget. I live to my means and if I can't afford something, I will simply go without or save for it. I have no debts and no credit cards and that's how I like it.