Go for groceries after you have eaten ... not before (when you are hungry!)
Plan your menu for the week ahead, and only buy according to the plan.
Know when your stores mark down meats/produce/packaged goods. (time of day, day of week)
Sometimes you can reap huge savings on meat and produce by doing so.
While close on BBD, there's no rush on eating the meats, just freeze it for a later use.