Personal resources have been widely investigated in studies on work engagement. They have been mainly viewed as affected by individuals’ situated environments and as the most proximal predictor of work engagement. Unlike those studies, we aimed to investigate whether personal resources can be crafted by individuals and whether there are mechanisms embedded in the relationship between personal resources and work engagement. Using a diary study conducted over seven consecutive days with 70 individuals who were either married or living with a partner and who were considering and subsequently underwent cosmetic surgery on their pelvic region during the survey period (n = 490 observations), we investigated differences in the individuals’ personal resources (i.e., self-efficacy, self-esteem, and optimism) pre- and postsurgery. We further investigated the relationship between individuals’ personal resources after surgery and their work engagement by using home elements (i.e., home resources and home demands) as mediators. The proposed hypotheses are underpinned by the conservation of resources theory (COR theory) and are empirically supported. We claim that individuals’ personal resources can be crafted outside the work environment (i.e., nonwork environment) and that such personal resources contribute to work engagement by motivating individuals to develop a nonwork environment (e.g., home) that allows them to successfully control and influence their work environment by increasing/decreasing home resources/demands.