stop impulse buying

I do it waaaaayyyyyy to much. I just go in a shop, pick up things i like without really looking at the price tags, and it’s not until i get them home that i realise how much i’ve spent. I don’t need most of it, I will return some bits but not everything. I waste so much money on things i never wear/ use. And it’s not like i even have the money to be throwing away in the first place!