I guess it's a personal preference, but it seems like the answer would be long enough to challenge you!
I have never actually set down the challenge for myself quite so bluntly, but I have definitely slowed my shopping in recent months, since I did a major wardrobe overhaul last year and am in very good shape now.
I even allowed myself a budget (and some suitcase space) in Reykjavik to spend on some new items, but only found one knit top that had to come home with me, clothing wise. I did get a few accessories -- fingerless gloves, a great new black studded belt to replace a worn out one, and a bracelet and a stone ring from a local artisan.
Now that I'm home, I'm tempted by some items I see here and online but I'm not compelled to go into the stores yet. I'm going to see how long I can roll with that.