Here are some happy holiday messages for your manager:

1. "Happy holidays! Thank you for your guidance and mentorship this past year."
2. "To the best manager one could have: Your leadership has been both inspiring to watch and instrumental in shepherding the team towards fulfilling company goals."
3. "I’m so happy that I’ve been able to work and learn alongside you."
4. "Wishing you and your family happiness this holiday season!" ^{teambuilding.com 1}
5. "Best wishes and a Happy New Year boss, from my family to yours."
6. "Having a boss as awesome as you is a gift that keeps on giving." ^{someonesentyouagreeting.com 2}