In this article, the author looks at psychoanalytic change processes inspired by the a-theroretical concept transmission.1 Influenced by clinical experience with a seven-year-old traumatized boy, he argues that transmissions of joy, vitality and play also come about and are important for the cure. Dealing with strong negative transference and projective identification, these streams of light can be difficult to spot, balance and stay open for. The author argues that we as analyst are sometimes reluctant to dare dive into these positive transactions given our hang for processes of the tragic and painful. This could be especially important with patients that has little experience of vital and constructive exchanges. The author looks to theory that argues in the same lines and concludes that being able to balance both light and darkness could be crucial working with patients were good experiences has turned bad and dangerous earlier in life. Following Winnicotts key understanding of play, this fundamental activity has a pivotal role in such processes.