1. Don’t call someone more than twice in a row. If they don’t answer, they probably have something important to do. 2. Pay back money you borrowed before the person asks for it. This shows that you are responsible. The same goes for borrowed items like umbrellas and pens. 3. Don’t order the most expensive food when someone else is treating you to a meal. 4. Don’t ask personal questions like “Why aren’t you married yet?” or “Why don’t you have kids?” It’s not your business. 5. Always hold the door open for the person behind you, whether they are male or female, older or younger. Treating people well does not make you less important. 6. If you share a taxi with a friend and they pay, offer to pay next time. 7. Respect different opinions. What seems like a 6 to you might look like a 9 to someone else. Getting a second opinion is also good. 8. Don’t interrupt when someone is talking. Let them finish what they want to say. 9. If you tease someone and they don’t like it, stop immediately and...