Treat children as though they already have achieved their own greatness, as if they are no-limit people who welcome change and are unafraid of the unknown. Do it enough and they will actually be all that they ever dreamed of becoming.
You are led to believe that the material things are reality and are providing you with what you need, while in fact they are only more matter, which is made up of more invisible space. What you need, you already have, and when you know it, and go within and create it in your mind, the divine sustenance you seek in the form of material things or money will be manifested in whatever amounts needed.
You can learn to be optimistic or you can learn to be pessimistic.