The Bell Jar: A Friendship Lost to Mental Illness Esther and Joan's friendship, once a beacon of hope, dims as mental illness casts its shadow. Read More Bible of FriendshipMark GichukiMay 1, 2025friendship, mental health, Sylvia Plath, The Bell Jar, literature, book review, character analysis, psychological analysis, coming-of-age, female friendship, Esther Greenwood, Joan Gilling, mental illness, character study, literary analysisComment