Generally speaking, optimists always get better and better. A better future is the result of optimism in the present. We may be optimistic by nature, but if we are not, we have to train ourselves to be an optimist. Individual abilities, or the total abilities of human beings, are also limited in how they develop. That said, there are always new problems, there are always difficulties. Once these new problems are solved, the difficulties will not be difficult, and new development will be achie...
