Use a three-part message
Begin with the occasion, add one real detail about the person, then end with a warm wish. For example, thank a friend for making time for your weekly walks and wish them more enjoyable afternoons in the year ahead. Keep the detail true and comfortable for the recipient to read.
Match the tone to your relationship
For a colleague, a short appreciative message is usually enough. For a close friend, mention a shared moment or an inside joke that will make sense to them. Avoid jokes about age, relationships or appearance unless you are certain they will be welcome.
Personalise without overcomplicating
A simple drawing, a printed photo or a small bookmark can make a plain card feel special. Leave enough space for handwriting and use a pen that will not smudge on the card surface. If sending by post, check the envelope size and protect raised decorations.
When you do not know what to say
Start with one honest sentence: “I have enjoyed getting to know you this year” or “Thank you for your patience with our project.” You can be warm without claiming a closeness you do not feel. For difficult occasions, keep the message gentle and avoid promising that everything will be fine.