You're viewing a single thread.
Don't use your bank or credit card! Get the amount of money needed for let say the week as cash and use cash everywhere. You know always how much is available without checking your bank apps. When the week finishe if there's some money still available you could use it for "less needed" goods.
My mum is like this but I think this kind of thing depends on where you're at in your financial journey and also the type of person you are.
I find that cash burns a hole in my pocket and I check my apps regularly to track spending so any cash effectively just "disappears", I won't even remember what I spent it on.
I completely prefer digital spending because for me it's easier not to lose track and if I seem short, I can trace exactly where it went.
If you're someone who is not in financial trouble and pays off credit cards regularly then I advise trying to find one with decent rewards and use it for as much of your spending as possible.
This not only gets you air miles / cash back but also helps to build a strong credit record if you're looking to buy a house, car, ... in the future.