"Make it a habit to say thank you." These are the words posted on the wall of our class in highschool. I never thought to adopt and make it a habit 'til now.On my first job as waiter in a luxury hotel, I was able to serve different guests with various requests. Of all those guests I smiled and served for, I will never forget the face of the 5 year old boy I served on the Chinese New Year of 2011.After refilling 12 glasses of water on the presidential table I heard no thank you's from the guests seated on the table except a five year old boy who said to me, "Thank you." My heart really smiled as I feel the kindness of this child. He is just a child but a child with a thought mature people need. Small things are small but we need to appreciate them. No matter how young or old you are, you need...