During the holidays, and actually throughout the year, familiar really can be best—we do like spaces to change or evolve slightly over time and even to vary slightly by time of day or season of the year, but too many changes, too quickly can make us feel stressed, ill-at-ease. Familiarity is prized in art and architecture and elsewhere as well. So, open the drapes to make sure you experience natural light at different hours, and bring in seasonal items from…