By restricting yourself to a certain amount of money that you can spend, you can see where your money is going and where you might be able to cut back.
This is your game, and these are your rules. How long will you play? Will it be a weekend, month, or year? What things do you have permission to spend money on?
Not only are you setting a time goal, but you're also setting a savings goal. Deciding what you'll do with all the money you saved is the most fun out of all the steps.
This is a great time to clean out garages, closets, and basements. Finding something to get rid of will help keep you busy, but you can also sell stuff and MAKE MONEY.