The unpredictability of human nature affects everyone. You cannot judge a book by its cover is a proverb which has been proven true over and over again. Someone might be good-looking, but they could have a tainted heart. Likewise, someone could very well be quite ugly, but on the inside have a heart of gold. In almost every situation in daily life, someone is disappointed and someone is happy; someone faces sadness at every turn, while another experiences appiness every minute. Knowing how to have correct thoughts and the right frame of mind are key to happiness and this book provides vital guidance on how to be happy and avoid being downhearted.