"I shall the effect of this good lesson keeps as watchman to my heart"

In this quote, William Shakespeare is expressing his dedication to gaining from a lesson he has been taught. He is assuring to keep the lesson in his heart and use it as a guide for his future actions. He is suggesting that he will utilize the lesson to be more conscious of his choices and to be more familiar with the consequences of his actions. He is likewise recommending that he will utilize the lesson to be more mindful of his ideas and sensations, and to be more aware of how his actions impact others. By using the metaphor of a watchman, he is highlighting the value of being alert and mindful to his own behavior. He is recommending that he will use the lesson to be more conscious of his actions and to be more knowledgeable about the impact of his choices. By keeping the lesson in his heart, he is expressing his commitment to gaining from the lesson and to using it as a guide for his future actions.