I believe that everyone in the world strives to find happiness in their way. People have incredibly different personalities, beliefs, religions, values, and ideals, but in the end, no matter how we go through life, we all want to be in a place where we can only 'be happy.
Words are just symbols. When I use the word happy, I mean lasting joy that permeates your daily life. My use of the term happiness can refer to a feeling of calm, joy, happiness, and fulfillment. When I talk about the secret of happiness, I mean a stage in your life where your default state is happiness, and happiness is in your being for the vast majority of the time.
During my trip, I met a large number of people, all with different life situations and different degrees of happiness. I have met people with a very simple life, surrounded by loving friends who wake up every day bored, dissatisfied, or even bored by their situation. I have met financially rich people who cry out in rage: "I can buy or do what I want! It would not be enough!"