Cash.

If you really can't control your spending - and I know how easy it is to overspend with credit! - leave everything at home except the exact amount you're allowing yourself to spend, in cash.

So if you want to spend $50 a week on groceries, for example, give yourself that much cash and leave the plastic at home.  Same for furnishings, clothing, whatever.  But the discipline has to be there to stick to cash and leave the rest home.

Might feel like deprivation at first, but once you get used to being in control of your money, it is freeing.   

Oh and I dont use credit cards anymore they are evil.  I only use my debit

Take a list.  If it's on the list you can buy it. 

I avoid malls.

I also basically only shop in lower-end stores where things are always on sale like Kohl's, WHEN I need something. About a month ago, I needed new pants and sweaters for work. I shopped in the juniors department and got like 6 pairs of pants and 5 basic sweaters for around $125 or so.   

I try not to follow trends either.  Basics are best since they are "always in style". 

If you feel the urge to splurge, by something cheap, like a nice pair of earrings or a new scarf for only a couple of bucks. 

I do end up blowing a lot of money at Trader Joe's though on groceries. 
That's my downfall.  So again, with that, avoid if I have to!

I like the list idea...........that often works well for me. Especially with groceries.

I also have stopped using credit cards as well.  I agree they are the devil.

I also put all my money in savings after I pay off all my bills except a small amount that is used to cover snacks during the week, gas, maybe a small tiny treat. When it's gone, it's gone. 

I have found that I can survive on $20.00 of "spending" money each week easily.

Oh, the dollar store also can be your friend for basic things like shampoo and household cleaning supplies.

If I feel like going shopping, I get involved in some other activity.........reading, watching a movie, going for a walk..........again, maybe buying something much cheaper like treating myself out to a cup of coffee or tea.