In "Bird by Bird," Anne Lamott discusses the concept of our "psychic muscles," which tighten around emotional wounds from our past, including childhood trauma and adulthood disappointments. These psychological barriers form to protect us from further pain but ultimately prevent healing. As we cling to these unresolved issues, our ability to live and express ourselves fully is restricted, leading to a limited interaction with life and creativity.

Lamott suggests that perfectionism is one manifestation of these cramped psychic muscles. Many times, we may be unaware of the limitations imposed by our past wounds and the resulting constraints. This lack of awareness curtails our ability to engage with life intensely and authentically, causing us to approach our experiences with anxiety instead of openness. Breaking free from these constraints is essential for true growth and creativity.