There is a saying that goes, "Take from above, get in it, take from the middle, get below." This means that if the goal is set very high, it will at least be in it; when you set the goal in general, it is easy to complete, and if you take the middle, you can only get it down. Therefore, if we set our goals a little higher, the resulting force will make it easier for us to have full confidence and courage to meet the challenge