What could you let go of, for the sake of harmony?

To answer this question, we should define “harmony” first. Is this a pleasant musical sound made by different notes played in the meantime, or a situation in which people are peaceful and agree with each other? Is this a social, racial or political harmony? Or good feelings in the family or home? For the last one – domestic harmony I could go of all tangible articles to make my family happy and fulfilled. There are certain moral principles that I could not give up for anyone, but fortunately, such situations do not arise in my family. The rest of the answer to this question requires delving deeper into the subject against the background of philosophies, politics, religion and sociology.