When you're in pain, tomorrow doesn't exist - just the pain - and the only thing that you want in the world is for it to go away.
We can think about how we reduce the pain in paying. So, for example, credit cards are wonderful mechanisms to reduce the pain of paying. If you go to a restaurant and you are paying cash, you would feel much worse than if you were paying with credit card. Why? You know the price, there's no surprise, but if you're paying cash, you feel a bit more guilt.
If you want to spend more money in restaurants, use credit cards more than cash. If you want to spend less, use cash more than credit cards. But in general, we can think about how to use the pain of paying and how much of it do we want. And I think we have like a range. Credit cards have very little pain of paying, debit cards have a little bit more because you feel like today, at least it is coming out of your checking account, and cash has much more.
I don't think we should go around life and being miserable all the time and feel the pain of paying. It's a question of what categories we want to spend more on and what categories we want feel that we are spending too much on and we want to cut down.
When people are in severe pain, there's an expression, you're a "pain person," and what that means is that nothing else matters.