Lesson 1 When you have an appointment with your friends, try to remember that you did. Even if you are not sure whether or not he/she is coming double check with the actual person and not to confirm from prediction   Lesson 2 Every human being have their own unique color It might be unusual or acceptable to your standard It doesn't mean that they are wrong or right Cause even your color might look wrong or right to the other person Try to accept the color of each other, that way you will have no problem with any types of human being in this world. Bottom line, we are all lonely people in this earth.   Lesson 3 Do not apologize more than 2 times After 2, it just seems like you are forcing yourself to apologize Numbers of apologiztion doesn't matter Eventhough it's once, it's enough if you heart is in to it.   Lesson 4 Above all, each individual people are long last to remember so, appreciate every single thing they do for you Be thankful that they even remember you