Just manifest customers.
Crowd the store with customers. Make them buy the big-ticket items, like CPUs and monitors and printers. Forget the mice and the mouse pads.
Go on. Visualise. Use the senses. Hear them talking in your store. Visualise their faces, their expressions. Feel the customer's credit card in your hand. Hear yourself say to customers, "I'm sorry, we've run out of stocks again, we sold everything over the past three days."
Experience your own sense of amazement, as you check your accounts. Visualise your bank statement, feel the paper in your hands, see the final figure as you would like it to be. Feel the "Haha, I told you so!" feeling in yourself, as your wife says incredulously to you, "How on earth did this happen? Is it that "Secret" thing you were telling me?"
Tip for you.
Believe me. It works.