I feel like the clearest mark of wisdom in this advice is the caveat "as it is possible for them to be". Mortality is a central and inescapable part of human life.No matter how we appear on the outside, all of us can feel fearful, sad, or lonely on the inside...
May they be safe, and free from suffering.
May they be as happy and healthy as it is possible for them to be.
May they have ease of being.