The source is an excerpt from a podcast episode titled "daily habits that build confidence" hosted by Teresa for Model Mentality, focusing on building unshakable confidence through daily habits. The host asserts that confidence is a skill, not a personality trait, and emphasizes the importance of internal actions taken before the day begins, such as avoiding phone use for five minutes, journaling what one is grateful for, and engaging in physical movement. The episode references habit research, specifically James Clear's work on the cue, routine, and reward loop, to explain the psychology behind small, consistent actions. Finally, the host offers three actionable tips for listeners: creating a five-minute morning ritual, replacing "I can't" with "I'm learning to," and celebrating micro-wins to sustain momentum.