I ask myself this question every time I have to explain myself on purchasing something. Why did you buy that? Do you remember when you bought this! I don’t know to both. Half the time, I can’t recall instantly what the charge was for or why. Usually, after some thought about the dates or where I was at the time, I can make some association to the purchase and usually what ever the reason, seems quite logical to me. It was a gift. It was for my research. I was out of that. All most always it wasn’t directly for me, which is why the two bank categories personal and shopping seem ridiculously misguide. All this is what has led to my enlightenment of unnecessary spending.
The behaviors related to this is what I can’t explain. I can relate to sacrifices but I don’t practice it. I know afterward I usually decide it was unnecessary and return things. Returning is my only strategy that seems to fix the spending but the act of returning things doesn’t bother me at all. It appears to be my only solution in the end.