I try to buy as much as possible on sale. I rarely buy clothes for myself or my daughter that are not on sale and, if possible, on clearance. Sadly, I still found the temptation to purchase too great to resist, so we recently switched to cash only and that has helped me curb my impulses a lot!!
I do use coupons pretty regularly. I did use to poke fun at coupon people, but I've realized they can save you a lot of money IF you stick with using them only for stuff you would have bought anyway. On the other hand, many coupons only take brand name products down to a level with store brand equivalents. So if you try store brands and feel the quality is the same, just stick with those and ditch the coupons. For example, I get lots of coupons for Kraft cheese, but the Publix store brand is cheaper and it's fine so I just buy that.