The former aims at the effect, that is, the internal cause is seen in the external cause; The latter refers to the change of internal factors.

For example, you have never run in the morning before, but you are determined to run; Then the qualitative change first occurs in the effect; Let's just say you ran away. This is the second qualitative change.

To make college life meaningful, first of all, it involves value judgment; There is a time interval between the decision and the effect after this determination; The main problem of philosophy is estimated to be how people view this interval. Simply put, if you pass this stage, it means success, and vice versa.

My personal suggestion: if you analyze it, you should focus on that stage. The gap between knowing and doing concentrates the wisdom of almost all the smartest philosophers, and everything revolves around it. In addition, when choosing value, we should pay attention to: the so-called dialectics means seeing the big from the small and seeing the big from the small; As Sun Tzu said in Sun Tzu's Art of War, if you mix the benefits, you can get rid of them, and if you mix the harms, you can solve them. That's the truth.

Hehe, I hope it works for you.