The podcast episode "The Psychology of Your 20s" delves into the phenomenon of grieving past versions of oneself, particularly during the transformative decade of one's 20s. The host explores why people experience this grief, linking it to identity formation, life transitions, and the influence of social media. She discusses the concept of disenfranchised grief, where the loss isn't openly acknowledged, leading to feelings of shame and confusion. The host also touches on nostalgia, the Pollyanna effect, and attachment theory, providing practical advice on how to acknowledge and validate these feelings, practice self-compassion, and redirect energy towards future goals, emphasizing that growth involves loss but ultimately leads to a stronger, wiser self. The episode concludes with answers to listener questions about leaving past selves, forgiving past mistakes, dealing with family perceptions, and pursuing abandoned careers.