I totally get it—it happened to me a while back when I was going to pay for a coffee. I was exchanging Hive for bolivars at my usual currency exchange, but I sent it to the wrong person, and that was all I had in my wallet. I felt really stupid, but luckily I always have my emergency contact, who paid for my coffee right then and there.
Despite the discomfort and tough times, it's always a good excuse to enjoy a nice cup of coffee