So this is kind of dorky, but I'm going to share anyway.
Many of my fashion bloggers have mentioned over the last few years that one of their best shopping tips is to make a collection of all of your inspiration looks and a list of items you'll need to make them happen. It's well known that when you make a list before you go in the grocery store you'll buy less, buy healthier and not take home any random impulse pieces you'll regret later. This is basically what the fashion chicas were saying. When you know what you're looking for, shopping becomes more of a treasure hunt for those perfect items that you've already planned to add to your wardrobe. You won't waste money on items that you'll later wish you hadn't impulse-bought.
SOOO for my fall wardrobe I started printing/clipping/taping little bits and pieces here and there - from catalogs like JCrew and Anthro and some of my favorite blogger's looks. Once they were all together in the book it was pretty easy to see what aesthetic I'm going after this season and what common items I need to start looking for.
It's amazing how disciplined I've been shopping over the last month or two as a result. Amazing sale at Banana... I walk out empty handed (unheard of). I just kept my eyes out for the items I knew I really wanted and when I couldn't find them, it just wasn't meant to be. BUT when I do find one of those items it makes it extra exciting!
Sorry for the long explanation - but I definitely encourage you to create your own look book and let it guide you in your fall shopping! Here are a few images from mine...