Christmas is a time of the year that poses a number of challenges. We are bombarded with images of happy families, bright lights, food, toys and forced jollity. Yet a time of joy for some is a time of pain for others - there are the obvious reasons, bereavement, family breakdown, estrangement are all situations that become more focused at this time of year. Then there are the less obvious, people spending enforced time together can result in frayed nerves, the weather can ha