Hello [Prospect name],
I wanted to take a moment and thank you for working with me this year. I know you have a lot of choices, and I'm grateful you've chosen to spend time getting to know me and [Company's product/service].
Happy holidays, and please let me know if I can do anything to make your life easier this season.
Regards,
[Your name]
Nie wiem czy o to chodziło, ale mam nadzieje, ze pomoglam