The above question requires a personal answer, based on your perception of your own life. For that reason, I can't write an answer to you, but I will show you how to answer it.

To answer the first question, you must:

Thinking about the rules that you determined for your own life.

In this case, you should reflect on the limits you have imposed to promote a better quality of life and relationship for yourself.

Example: You've determined that you won't get into arguments, won't eat too much sugar, and won't get involved with people who care too much about cell phones and other electronic devices.

To answer the second question, you must think about which of these rules is the most important and promotes more happiness and lightness in your life. Using the examples above, you can say that the no-discussion rule is the most important because it avoids stress and anxiety.