I make a list of what I need. Get them first. Then I wander around and see what calls my name- usually they are all sending subliminal messages as soon as I walk in the door. I don't usually do the notions- just the fabric speaks my language.
I usually end up with 1 or 2 extra things because it matches something I have. But I have been known to "get in and get out" without giving into temptation.
I love to wander the aisles at the lqs. It's hard to go home- I want it all and those darn ladies are just too helpful!