Today's people are very much interested in self-improvement. This is proved by so many kinds of books on self-improvement that are sold at bookstores. The common subject of these books is the power of positive thoughts. That is, you can expect a success when you have a positive thinking with which you can do anything casting off the negative way of thinking in which you can't do it. Positive thoughts are also important in faith. It is because the impossible can be made possible for him who believes in and relies on God Almighty.
"'If You can?' All things are possible to him who believes." (Mark 9:23)