Learning is an active process. We learn by doing. So if you desire to master the principles that you have, do something about them. Make some rules of action and apply those rules at every opportunity. If you do not apply rules, you will forget them quickly. Only knowledge that is used sticks in your mind.
You will find it difficult to apply rules at every opportunity most of the time. It is human nature. When you are displeased, it is much easier to criticize than it is to try to understand the other person’s viewpoint. It is easier to find fault than to find praise. If you really want positive change in your life, you require time, persistence and daily application.
Whatever rules you make to improve your life, regard them and regard your actions on relation relations.
Whenever you are confronted with some specific problem, try to recall your rule book and try new ways to achieve and resolve the problems. Nobody can teach you what you should do in what situation. It is you who have to know and have to understand the situation and find a way out of trouble times.