This will deal with how to treat each other in the modern wealthy world.
Listen much more than you speak, and you will understand more than you ever thought you could. Never interrupt another human being, but memorize relevant questions and comments for when there has been a silence for more than one moment. Shower each other with compliments and react with an even better compliment. Treat all guests like royalty, and try to make a stranger become a guest. When you don't know, say the magic words "I don't know". Respect all religions, traditions, and individuals. Prejudice and racial categorization are utter foolishness: please avoid making a fool of yourself in front of other people. Treat everybody the best you can, and don't let anybody ever treat you less than perfectly.
Organize local dinners, lunches, and parties, and shower each other with tailor-made gifts. Surprise your loved ones with gifts like clothing, furniture, and art. Write poems, stories, and songs. Always take 'no' for an answer, and say 'yes' to everybody who needs help.
Be truthful, do not gossip, and be grateful to life. Leave all surroundings tidier and more beautiful than you ever found it. When asked about a specific subject, tell the asker what you know before referring him / her / to publically available texts. Act, as much as possible, to local tradition wherever you are. Never complain about the culture of your hometown, instead praise it. To badmouth your own people is a shame to your parents, family, forefathers, and yourself.
Say what you know and be silent about what you do not know.
Intelligence exists on a million different levels. Praise wisdom, and do not tolerate untruthfulness and foolishness.
In this super-specialized global human community, the best you can do jobwise, is to follow your heart.
