The purpose of this study was to examine the relationship among everyday activities, "the zest for living" and well-being in high school students. We developed an everyday activities scale and the zest for living scale. A total of three hundred and forty-four high school students completed three kinds of questionnaires which measure their everyday activities, the zest for living, and the sense of emotional well-being. The major findings were as follows: (1) It was found that the everyday activities consists of the following four factors; Factor 1: interaction, Factor 2: after school activities, Factor 3: club activities, and Factor 4: playing with friends. (2) It was found that the zest for living consists of five factors. (3) It was shown that the positive relationship between students' everyday activities and the zest for living. (4) It was also found that their everyday activities and the zest for living were positively related with the sense of emotional well-being.