online shopping

I NEED to stop all of the emails I get sent to me from stores. It's terrible. When there's a deal I feel like I'm wasting money if I don't buy something. But actually I'm wasting money when I click on the site and look through all of the clothes. I don't need any new clothes, but why does it make me feel so much better when I buy something? I have heard of retail therapy, but never really believed in it. But when I buy something....everything feels better. WHYYYY