The "http://www.thepreciousproject.eu/" PRECIOUS project (PREventive Care Infrastructure based On Ubiquitous Sensing) aims to solve the challenge of motivating individuals to adopt healthier lifestyles using a combination of motivational interviewing and gamification principles, and taking advantage of the advances in technology. Dr. Pilar Lusilla, researcher from the Psychiatry, mental health and addictions at Vall d’Hebron Institute of Research (VHIR), is part of the project and has spoken about it this week at the "http://www.icmi-conference.org/ICMI/Home.html" International Conference on Motivational Interviewing (ICMI).PRECIOUS project aims to develop a preventive care system to promote healthy lifestyles, which is comprised of three components. First of all, transparent sensors for monitoring user context and health indicators (food intake, sleep and activity), that deliver ambient data about current user behavior. Secondly, users are represented by individual virtual models, which infer health risks and suggest behavioral changes. Finally, state-of-the-art motivational techniques originating from gamification and motivational interviews to trigger a set of feedback tools to change the user habits toward more healthy behavior. The main challenge of the project is motivating people to make lifestyle changes, this is the reason why the design is shaped around the concept of gamification, an approach that has been shown to be successful in various contexts, placing the individual at the centre of the action.The initial game design has been completed and programming of the first version is underway, pilot tests have started on May and the first laboratory experiments will take place this June. PRECIOUS is a european project, with the final objective of improving the health of the users and delivering cost savings in the public health sector.