I am healthy, happy and radiant.

Radiance is a downstream effect, almost always. Sleep leaks into mood, mood leaks into the face, and what reads as glow from across a room is often just someone who has slept and is not currently dreading anything.

Which is oddly encouraging, because it puts the lever much further upstream than the mirror. Nobody glows their way into rest. It runs the other direction.

The most flattering thing available to any face is eight hours and a reduction in the number of things being carried at once. Everything else is decoration laid on top of that.