The old saying was, "A stitch in time saves nine." Recently I did something on two separate occasions with regard to shopping expeditions that would validate this statement. From a time management point of view, I had meant to save time but instead ended up turning an extra five minutes into additional trips consuming more than an hour each.
The issue was trying on clothes, deciding which to purchase, heading for the cash register, and being sidetracked by another item-impulse buying. I would add that new item to my soon-to-be purchases. Instead of going back and trying this new piece on, I decided it should be fine. I really didn't want to spend the time returning to the dressing room and trying on one more thing-another five minutes. I continued to the cash register, paid for everything, and then after I got home found that there were problems with the last items that I couldn't have noticed without actually trying them on.