If the idea of doing a budget seems too mammoth a task, just pick two categories of expenses that seem to be your weakness. Record how much you spend on these over four weeks and then aim to halve this over the next four weeks. Make sure at least every person in the household is measuring one category each. Remember you can only manage something if you measure it.
What other steps have you taken or lessons have you learned as a result of the Global Financial Crisis / Credit Crunch?