Recently I moved into a new apt and have made it a point to not everrrrr buy random throw away art from HomeGoods or similar mass produced junk. I frequently peruse Etsy for the same type of goods - but handmade by a real person pursuing a real dream. I have also posted on social media about finding local artists and the response has been pretty epic. There are probably people in your own 'hood making awesome one of a kind art.
Move over Craigslist. I have been using this FB tool for upcycled furniture - I've gotten some serious treasures from local people/artists in my area for about half of what I would have paid from websites like Wayfair. If you have an idea of what you want and have a little patience, than you can really find something special using this feature.
Almost every town has some place to find local handmade goods. Thanks to the interwebs its easier than ever to find out about these events. Even if you are buying new retail - buying from a local boutique is infinitely better than buying from a big box. Getting to know your local community and business owners is also pretty rad!
TALK YOUR SELF OUT OF IT
Ok this one is a bit more abstract - but when you find yourself in a store with a bunch of random things you NEED in your cart - talk yourself through each item.
Do you really need it? Or do you just need the satisfaction of something new.
Do you already have something similar at home?
Can you take what you already have and have it mended or reuse it in a different way?