Freeze the credit card-literally! I read this in a book. Put the card in an old ice cream box, pour water over it & freeze it. Then the next time you want to buy something & don’t have the cash for it, you’ll have a long time to think about whether you really need it or not while the ice is melthing!
Good luck :0)

I have had the same problem with frivolous buying. This is what helped me: Hang a piece of paper on your fridge and write down every little purchase on it. After a while, you will get to see on paper where all of your money is going and this makes you start to think twice about those little purchases.

The next time you are tempted to buy a magazine or a coffee (or something else you want but don’t need) you will think “I don’t want to have to write this down.”