Trying to get stuff only in promotions and discounts and saving as much coupons as possible but buying things only if they are needed not just for the discount, also trying to limit the spending is a good way imo.
That's good thing to do as if you save now it can be helpful for you in the future and that money can be utilized at the time of emergencies, we need to stop spending money in unwanted things, and also need to control our expenses related to restaurants, coffee bars and if it is done in a proper way it can save a good amount of money.