Karryn, the wallet process is one of the processes (more like games, actually) for developing a feeling of abundance in the Abraham-Hicks book "Ask And It Is Given". If you don't have it yet, I would highly recommend buying it, or borrowing it from the library if you currently don't have the funds for your own copy. (I assure you that you WILL want your own copy very soon. ) You might also want to check out "Money and the Law of Attraction" and "The Vortex", too, at some stage, but the first one I mentioned is a really good one to start out with.
I have my own version of the Wallet Process, I carry around double of the requested amount, and so does my husband.
The extra dimension we bring to the game is, knowing we have that money in our wallet, we don't have to count stuff up when we go grocery shopping or whatever, (we used to do that because we always were short of money and had to really watch out what day we could buy what stuff). Now we always have extra money in our wallet, so we never run out of cash.
Since we started doing that, we suddenly could buy a lot more (even without using the extra cash). It's like the extra money that's in there, attracts more other money.
P.S.: you can always personalize all of the Abe processes, I do it all the time, and invent new ones based on the existing ones. It's a lot of fun and the money-vibe grows a lot faster. (I got to the point where someone gave me an actual house). Since then, my money troubles are completely gone up into thin air.