Happiness is the main goal for everyone in life. Work places are also focusing on happiness among their employees. Recently, many countries started to organize conferences and summits about happiness in work place. This means that happiness became an essential concept and requirement rather than being an optional one. I chose to name the book (100X100) where the first 100 is 100 different ways to achieve happiness at work place and the second 100 means around 100 words in each paragraph. My objective is mainly to open the reader\'s mind about the mentioned tools without going into a lot of depth, then give the opportunity to readers to search more about each tool.