At times when you are unhappy you do something that makes you happy and if shopping makes you happy then go shopping. However, which part of shopping is the high for you, the act of trying on clothes or the act of “spending the money”. If trying on the clothes makes you feel good about yourself then go ahead and do it. Fill your cart with all sorts of items but then before you get to the register choose just one thing, the favorite of the day and tell yourself “I deserve something special” and feel good about yourself and doing something nice for yourself. It really isn’t necessary to buy everything and then feel bad later. If the high is in “spending” the money then remind yourself that you did spend money on yourself by purchasing that special item for yourself. Appreciate the moment and the purchase.
It isn’t necessary to go overboard and ruin the experience by having to feel guilty later. Train yourself to respect yourself and appreciate the experience. YOU deserve to “gift” yourself and “treat” yourself to nice things and special days. So go ahead and have a treat to make yourself feel better just don’t go overboard.