It's a great feeling! When I was just starting out with a side project, I used to carry in my wallet a bill that reflected the amount of money I had made in the

It's a great feeling! When I was just starting out with a side project, I used to carry in my wallet a bill that reflected the amount of money I had made in the prior week (and then day). This increased the saliency and physicality of the money I was making. There's research that shows that people spend less money when spending cash (versus card) because it feels more real. I used the "more real" feeling in reverse, to make the money I was earning feel more real than just bits floating in the ether.