Recently, I was flying back from Singapore on Philippine Airlines. I always try to demonstrate courtesy and kindness to flight attendants because their job is hard and often thankless. Whenever the flight attendant who was working my section of the cabin did something for me, I made sure I said “thank you” in a way that showed that I really meant it. Later during the 12 and one half hour flight, I noticed that this flight attendant was doing nice things for me that she wasn’t doing for the other passengers.  As we were approaching the Los Angeles airport, I said to her that I really appreciated all the kindness she had shown me. Her response was, “That’s because you have been so kind to me.” The lesson here is that kindness never goes unnoticed and it always has a very pleasant return on investment.