There is a greeting I routinely send to people on my Facebook friends and family list. I tweak it from time to time to suit specific personalities and/or relationships. Here is my greeting for all year, not just for the current season:
Brightest Blessings to you on this day. May you have more happy than sad, more laughter than tears, more love than hate, more friends than enemies, more sunshine than rain, more light than dark this day and all days to come.
Love, Light and Blessings Always. Ellen