Earlier today I caught wind of the social media trend du jour: It’s National Siblings Day. And I took pause. This pause feels familiar (no pun intended), because it’s something I’ve felt often. Like a vague shortness of breath, a faint fear of speaking up because I’m afraid my truth will ruffle feathers or hurt people unnecessarily. It’s a feeling that gets caught in my throat, and as I lean in to this, I realize . . . I can’t be the only one who experiences this. It’s probably just that…