Who is the writer of “Conquest of Happiness”?

Bertrand Russel is the writer of “Conquest of Happiness”. Happiness is a mental state of well-being characterized by positive emotions ranging from contentment to intense joy. Philosophers and religious thinkers often define happiness in terms of living a good life or flourishing rather than simply as an emotion. Bertrand Arthur William Russell, 3rd Earl Russell was a British philosopher, logician, mathematician, historian and social critic.