Some achievements feel better when experienced before announced.

Announcing a thing spends some of it. The reactions arrive, the story forms, and the private experience of having done it gets replaced by the public version almost immediately. Holding it for a while first, letting it belong only to you, tends to make it feel more real rather than less. There is no rush; the news keeps.

With the next good thing that happens, wait a day before telling anyone. Notice what it feels like to have it without the response. Then tell whoever you want, having already had it yourself.