For all of us who work with human beings, our humility brings us always back to: First, do no harm. Sometimes that's hard. Sometimes we make mistakes, notice things we wish we'd known before, or had been able to handle or perform better.
Don't insist a student take a pose s/he doesn't want to do. Don't ask twice. Respect your students' body wisdom. Become unattached to that teacher/student hierarchy. Teach your students to trust themselves. That's how they'll make friends with their bodies. That's how they'll heal.