Giving Joy Away. Olya

The phrase "Children's hospice" causes many to be taken aback. People try to isolate themselves from extraneous problems, to close themselves off from someone else's grief. One day, fate brought Olga, a successful actress in the past, a mother with many children and a happy wife, to one of these hospices. What could have prompted her to give up her career and start giving all her warmth to other people's children? What inner spiritual motives make people become volunteers and is it so easy to take on someone else's pain?