Missing someone can arrive during happiness without canceling the happiness.

Two things can be true at once inside a single afternoon. You can be genuinely glad, laughing at something, present with people you love, and feel the missing arrive underneath it without either one canceling the other. Happiness does not require the grief to be finished, and the grief does not make the happiness false. They share the room.

If the missing shows up in a good moment, you do not have to leave the moment to honor it. Let it sit beside you and keep going. Some people find it helps to say the name out loud, quietly, and carry on.