Saying this never helps. It’s like saying, “don’t drown,” to a drowning person. At least, that’s what it feels like.
There’s a lot of variations. Somebody might quote the bible or tell a story about their friend. Though they come from care, they’re mostly insufficient.
Here’s my $0.02: don’t tell people to stop worrying. Instead, let them worry. Be by there side as they worry, and soon they will realize that worrying doesn’t help much.
If you get frustrated at somebody who says, “don’t worry,” have empathy for them. They want to help, but they didn’t know any better. They’re not a professional lifeguard; they’re doing their best, just like you.
Patience. Presence. Forgiveness. Empathy. Compassion. Repeat. We’re all doing our best to heal.