Also, according to the studies shown on the Nation Sleep Foundation, 7-8 hrs of sleep each day is best for our health. Considering other factors like health problems, different people may have different modes of balancing life, but broadly speaking, the 1/3 division of day time is a good way to show our life pattern. This project is supposed to be a mobile app that collects time division data from the user everyday (like synchronize from schedule or calender)and generates a graph which shows the life pattern of the user, so the user can reflect on the way the spend time in the long run. I will use three different colors to represent work, sleep and other activities. Work will be red, sleep will blue and other will be green. I am using RGB color mode rather than CMYK, that is, adding the colors together will not make the color darker or become black. And if the day is exactly divided by 1/3, that day will be white. The following graph explains the different between RGB and CMYK.