This study explores how adolescents regulate their activity while working on creative projects. A large sample (N = 739) of Polish adolescents reported on their most creative, complex project conducted within the last year and answered retrospectively framed self-regulation items related to this specific activity. Exploratory and confirmatory factor analyses demonstrated a consistent pattern of self-regulation, capturing pre-task self-regulatory strategies (obstacles expectations, uncertainty acceptance), during-task strategies (adjusting approach, managing and reframing ambiguous goals, emotion regulation and dealing with obstacles), and post-task strategies (improving approach, readiness for sharing). Participants’ personality, creative self-concept, and creative mindsets were robustly related to the different strategies reported. Additionally, strategies resulted in differences in judges-assessed creativity of the projects conducted. We discuss the theoretical consequences and future research directions for creative self-regulation studies.