Thank you for doing STH.

因为做某事而感谢你。

Thank you for the concern, thanks for your help, I thank you for doing STH. Please accept my best wishes for your new peace and happiness.

感谢你的关怀，感谢你的帮助，感谢你对我做的一切……请接受我新春的祝愿，祝你平安幸福。

Thank you very much for (doing) sth.

十分感谢你（做）的某（事）物。