To [First Name],
I’m reflecting on the crazy (but rewarding!) year we’ve had and would like to say how grateful I am to you for being here for the ride.
Your ideas, commitment and energy make this company what it is. We couldn’t do it without you!
I expect things to just keep on getting better.
For now, enjoy the break (you deserve it!). I wish you and your family all the best for the holidays.
Until next year,
[Name]