Being soft is not an abstract concept.
Telling a student to be soft won’t make him soft.
If he practices a lot he might end up being soft but this is not always the case. Most students end up not being as soft as they could.
If you want to be soft you have to learn how to be soft. Meaning deliberate learning.
A simple principle that can make you soft is to be circular, to move in a spiral.
I know the argument for moving linearly. One argument is that the shortest distance between two points is a straight line.
However, did you know that this argument only applies to two points in space? If there is an obstruction in front of you, say an arm, then the shortest distance between two points is actually a curve!!!
You should not take my word for it but do your own research on this. I came across this mention once in a book, probably a book on physics. I can’t remember which book it was.
Knowledge that you find yourself has higher value than knowledge given to you particularly if the knowledge is free. So that’s why its good to find out for yourself. Then you will cherish it more.