Introduction Adolescents have to endure various transformations associated with physical, mental, and spiritual aspects. This period can be referred to as the time of becoming as teenagers find their selves and transfer into adulthood. Young people develop their value systems and tend to adhere to them throughout their lives, and religious beliefs play quite a significant role in this development. It is noteworthy that Millennials are considerably less religious than older generations as up to 50% of this population (at different ages) do not practice any religion, do not attend any religious facilities, and often disapprove of religious organizations (Twenge, Exline, Grubbs, Sastry, & Keith Campbell, 2015). At the same time, spirituality is quite important for young people although it takes less formal forms. This paper addresses the importance of spirituality in adolescents’ life regarding their health choices as well as the role home nurse professionals can play in the process of teenagers’ becoming. Spirituality and Religiousness First, it is necessary to define the concept of spirituality and religiousness to explore its role in adolescents’ development. Religiousness, in its broader sense, can be referred to as believing in sacred forces and their involvement in people’s life, adherence to certain practices, and compliance with specific principles and rules (Sauer-Zavala, Burris, & Carlson, 2014). Spirituality is even a more general concept associated with personal values and behavioral codes. As mentioned above, millennials are more secular than other generations, but they display adherence to quite strong conduct codes and value systems. Although adolescents may not subscribe to any formalized religious principles, they develop behavioral patterns based on the universal rules of morality. Adolescence is a period when children separate from the influence of their parents. The parental role in their children’s spiritual and religious development has been a matter of substantial research characterized by rather conflicting results. For instance, Twenge et al. (2015) claim that the percentage of college students who do not share their parents’ religious beliefs and identify their affiliation as “none” has doubled since the 1970s. However, Goeke-Morey, Taylor, Merrilees, Shirlow, and Cummings (2014) claim that parental religious beliefs have an impact on a significant population of teenagers. The association between mother’s religiousness and adolescents’ maturation is substantial, and mothers’ religious beliefs tend to have a positive impact on their children’s development. Goeke-Morey et al. (2014) state that religious and spiritual principles of mothers are instrumental in developing effective coping and adjustment strategies in adolescents. Therefore, it is clear that even though teenagers may not share their parents’ religious and spiritual beliefs, these principles and values have a significant effect on their further lives. Spirituality and High-Risk Behaviors The link between religiousness/spirituality and high-risk behavior has been researched for decades. Interestingly, findings suggest that the impact of religious beliefs can be twofold when it comes to certain spheres of life. On the one hand, adolescents who affiliate w