Continuous learning is essential to master English. Thus, we investigated how the motivation of English learners could be maintained. Four factors were examined; competitiveness with oneself or with one’s friends, the desire for validation in connection with various situations, and the admiration for fluent English speakers. Participants were divided into two groups: the first comprised students who planned to use English in the future, and the second, those who had no such plan. A multiple regression analysis was carried out with both groups, with the “maintenance of motivation” score as a dependent variable and the factors being investigated as independent variables. For the first group, “competitiveness with their selves” and “admiration for their English teachers” had a positive effect on the participants’ scores, whereas “competitiveness with other people” had a negative effect. For the second group, “admiration for their teachers” and “admiration for non-teachers” had a positive effect. Lastly, we also discussed what is needed to keep learners’ motivation from the viewpoint of English teachers.