It is difficult to change an established behavior, or a habit, well documented in social cognitive theory. Within this theoretical framework has also behavioral change models been developed. According to Nilsen et al is a habit behavior that has been repeated until it has become more or less automatically and is independently of the active awareness of what is happening. Gradually changing behavior control from being guided by beliefs, attitudes and intentions, that is triggered by a particular situation or context. It has been shown that behaviors that are repeated in a constant, unchanged context are difficult to change. So, change in the context where the habit has been established should to be important for a successful change of a habitual behavior.