Think of yourself as a container for wealth. If your container is small and your money is big, what's going to happen? You will lose it. Your container will overflow and the excess money will spill out all over the place. You simply cannot have more money than the container. Therefore you must grow to be a big container so you cannot only hold more wealth but also attract more wealth. The universe abhors a vacuum and if you have a very large money container, it will rush in to fill the space.