The year-end wrap-up always brings a mix of emotions, doesn't it? For a polished closing remark in English, I'd suggest something like: 'As we reflect on this year's achievements and challenges, I sincerely appreciate our collective efforts. Wishing everyone refreshing holidays and an inspired start to the new year.' This version acknowledges the journey while looking forward.
What makes this effective is its balance between professionalism and warmth. It avoids generic phrases like 'happy holidays' while still conveying gratitude. The structure moves from reflection to appreciation, then to future aspirations - a natural progression that resonates in Western business culture. You might tweak the adjectives depending on your industry's tone; creative fields could use 'innovative' instead of 'inspired', for instance.