What helps
A wedding, a job, a diploma, a stage, a milestone: the reply is about them, not you. You do not turn their news into a project, or into advice about what comes next.
If you know a detail that is theirs, name it. Otherwise a sincere sentence is enough. The size of the message does not measure your joy. Before the day, you save the word for the day.
Afterward, you do not stretch the celebration if they have moved on, and you do not make every month a status check. You do not repair a silence with this news.
Concrete example
"That stage was yours. I'm glad for you."
Key takeaway
- A true detail lands better than a superlative.
- The rest of their life is not the subject of the message.
Try next time
On the day, name the news and a detail of theirs if you have one. No advice.