Next lesson of this book is to give honest compliments!
Do you remember Mazlow’s hierarchy of need from the high school psychology lessons? The basic needs of humans are food and sleep, but these needs are not what makes us human, if we had only these needs we would be nothing but animals. What makes us different is that we also want to feel important, we want to feel like we have accomplished something. This is where appreciation comes in. Since the feeling of being meaningful is so important to us it is very easy to become liked by showing your appreciation. But be aware that people will notice when you are just trying to flatter them so there is no point in telling someone something nice if you don’t really mean it.
And if you are having a really bad day, there is no better cure than smiling to a stranger and say hello. Try it!