I think one of the biggest problems with debit cards, along with credit cards, is it makes your money way to easy to spend.
I have a debit card, that never leaves my house

I use it for online bill payments, and things such as that, but ONLY use cash when I buy things. I am not following anyones plan, and have not started the savings yet, because I'm still a single mom of 2 thats a full time college student, struggling to make ends meet- BUT when I am done with school next year, and working full time, the only debt I will have accumulated is my student loans, and my durango payment.
I have tried all the different ways of budgeting, and the only thing that actually worked for me was using cash. I know how much goes out each month, and how much has to be put into the checking account to cover the bills paid that way. My spreadsheets look WAY different than any of yours, because I get large amounts of $ when financial aid comes in. At that time, it's put into savings, then moved to checking monthly to pay that months bills. Each month, my grocery/household money is taken out into cash, and my monthly cash is what I get. If I spend more- I dont get more. Thats it.
A big thing that I have noticed a lot of people do is underestimate their spending. I took a complete month, from the 1st to the 30th and kept every receipt I had, and wrote down things without (that 2.37 cup of dnd coffee etc) and then went through and put them all into catagories. Obviously some I could not cut- like gas for the durango- I HAVE to drive to school and clinical sites etc.. but by using a complete months spending in that catagory, I have not gone over yet. Some weeks are less, some weeks are more, but by the end of the month, I haven't run out of gas money.
Groceries you can cut, either seriously or not so much. I have certain foods that I prefer the name brand of, and won't buy generic. I wait for coupons or I contact the company regarding coupons etc. I buy them when they are on sale etc.
I farmers market for veggies in the summer/fall here. Always buy corn on the cob at the stand, for 2.00 a dozen instead of 5.00 at the grocery store etc. I think the worst part about saving grocery money is it makes it harder to eat healthier. Processed foods are becoming so cheap and easy, it makes it easier to eat crappy. I search for bargins for food.
Our meat we buy at a butcher shop, not a grocery store. The cuts are WAY better, less fat etc. and are almost ALWAYS cheaper. I have a large chest freezer, that I fill, with 'box-o-meats' from our butcher, it's a set price for like 50lbs of meat, and some stuff we dont eat, so he substitutes..giving us chicken in place of hotdogs, or other less healthy meats.
I also cook on some weekends, filling the freezer that way, it might seem more expensive at first, but I can cook 2 days, and eat for 45-50...works!
Brandy