"Dear Boss, As the holidays approach, I wanted to take a moment to express my gratitude for your guidance and support throughout the year. You have been a constant source of inspiration and wisdom, and I am truly fortunate to have you as my boss. I appreciate all that you do to make our workplace a positive and productive environment. On behalf of the entire team, we wish you a wonderful holiday season and a new year filled with joy and success. Sincerely, [Your Name]"