This report visualizes the global happiness level across the world in the year 2017, uncovers how happiness score changed from the year 2016 to 2017, and discusses the factors that contribute to happiness. To categorize the countries in a reasonable way for the happiness analysis, I looked into different indexes that measure different aspects of the countries. GNI per capita (The GNI per capita is the dollar value of a country’s final income in a year, divided by its population. It reflects the average income of a country’s citizens.) is chosen, because it’s intuitive that the citizens who earn more income are less likely to worry about living issues, and that being financially free also enables them to entertain with more abundant methods.