Do you know what the most profitable skill is for running a small business? It's not keeping the shelves stocked. It's not managing employees. It's not even having a good product. No. The most important skill is marketing your business. Why? Well, the only time you can bring money into your business is if you sell something. You can't stock the shelves unless you have money to buy the stuff to put on the shelves. You can't pay your employees unless...