The present invention relates to healthy lifestyle management. In particular to a device for priming a person (10), comprising a detector (2) for detecting when the person (10) expresses or should express a predetermined behavior, a stimulus unit (4) for providing the person (10) with a sensory stimulus (14, 16, 21), and a control unit (3) for controlling said stimulus unit (4) to provide the person (10) with a sensory stimulus (14, 16, 21) when it has been detected that the person expresses a predetermined behavior and to provide the same person (10) with the same sensory stimulus (14, 16, 21) when it has been detected that the person (10) expresses or should express said predetermined behavior. A further aspect of the invention relates to a method for priming a person and a computer program for carrying out said method.