Advice On Setting Up a Family Budget

The Cisco Kid asked:
My wife and I are trying to set up a family budget that we will be able to stick to, and that won’t take a lot of our time. I don’t believe we will have much of a problem following all of the major items like mortgage, car payment, etc. What gets us behind are all of the incidentials like going to Home Depot and Target. There’s no question that we do a lot of impulse shopping, but have a hard time changing our ways. We use debit cards for all purchases and have been wondering if perhaps going on the cash system would help us. Any and all suggestions will be appreciated, especially anyone who has had this happen to them.