Each one of us has our own perception of what a holiday should be, be it Kwanzaa, Hanukkah, Christmas, or Thanksgiving. Look at the meanings you assign to holidays and be frank about them. Finally, there are many places people can turn to if they feel overwhelmed by those holiday blues. Oftentimes in rural areas we find that the family doc is the one that people go to first. They don't know why they might be feeling down, so they'll go to the family doctor.
Clergy definitely can be a resource.
The clergy can help people find meaning in the losses they've experienced. Friends can also be of tremendous help. It's amazing what friendship can do, especially if you're having a tough time at the end of the year, holiday time. Finally, it is important to remember that sometimes a mental health professional can be the best resource for helping people understand they are not alone. Counseling, talk therapy, being in a support group all can be helpful.