A method for managing and automating user customization of a device based on observed user behavior is disclosed. First, the method collects data on the user's activities on a device for a period of time. Second, the method learns about the user's behavior for routine repetitive operations by analyzing the user's activities data. Third, the method generates automation settings of the device based on the user's behavior for routine repetitive and predictive operations, and then presents the automation settings of the device to the user for customization of the device. These automation settings help to make the device operate more efficiently and more conveniently for the user, because they help perform the user's own routine repetitive operations.