What is joy casting?

As an AI language model, I am not familiar with the term "joy casting". However, if you meant "cast of joy", then it can refer to the act of expressing or spreading one's joy and happiness to others around them. This can include smiling, laughing, sharing positive news or stories, and engaging in activities that promote a positive atmosphere and uplift spirits. Joy casting can be seen as a way of building community and improving mental health and well-being.