I totally understand what you are saying - there are times that I have come home with items and, once the fog and delirium has cleared, I think to myself - what did I buy that for?
I am finding lately, though, that this is not happening as much. I think I've found stores overwhelming in the past because of the cycle I go through - bright colors, loud music, overbearing SA's, pick a load of items, try them on, nothing fits, leave in frustration - repeat cycle at the next store. Since joining YLF, I've realized that part of my struggle with clothing was not knowing that I have legitimate fit challenges for my body. I've referred to it on other threads, but I've basically determined that I can't wear anything other than petite sizes in tops and regular sizes in pants but they must have a low-rise (and I mean looooooow). Thus, I am now much more focused. If I need a top, I check out the three stores in my area that sell petite-size tops (Cleo, The Bay, Laura Petites). If I need pants, I now start with the stores that sell pants that fit my low-rise needs (Gap, Old Navy, Laura Petites). If I can't find what I'm looking for in those places, I do what Lyn does - put on some comfy shoes, have a good meal, drink some water, go to the bathroom and hit the mall.... at a non-busy time, of course!