Parents of children in their late infancy, toddlerhood, and early childhood (preschoolers) are required to play multifaceted roles, such as caregiving and socializing. This study presents a review of previous studies concerning practical research that focuses on caregiving as well as fundamental psychological research that highlights socialization. First, the review outlines the transition process of children into independence through parental support and scaffolding in terms of “fundamental daily habits” (i.e., eating, excreting, sleeping, dressing, and maintaining hygiene). Second, the review introduces the domain-specific approach of socialization and the parental goal-regulation model and discusses the relationship between them from a practical viewpoint. The study suggests that promoting research that emphasizes the importance of self-control in various scenarios and discusses effective roles for each parent is crucial for supporting parenting practices.