A four-week experimental study (N¼113) examined the effects of reflecting on intrinsic values. In the experimental group participants learned about the distinction between intrinsic (e.g. having close relationships) and extrinsic (e.g. being popular) values wrote about two personal intrinsic values and then reflected on these values weekly for four weeks. In the control group participants completed parallel exercises related to the daily details of their lives. Results revealed that participants in the intrinsic values group experienced greater well-being immediately following the written reflection than participants in the control group. Four weeks later the more engaged participants felt in the reflection exercises the more they prioritized intrinsic over extrinsic values and the greater their well-being. These effects occurred only for participants in the intrinsic values condition. The implications for changing value priorities and improving well-being are discussed.