Some situations go beyond regular friendship and care. They aren't going to be fixed. When you think you might be in a Care IQ situation, here are some key tools:
Learn to ask, "What's my role?"
Determine your boundaries. What can and can't, could and shouldn't you do? You aren't responsible for the other person's outcome.
Listen. Not to fix or to fit them into your world of experience, but to understand their situation from their perspective; how they see/feel it. Validate Feelings, ask questions to better understand, ask 'What could I do that would be helpful to you today?'
Widen the circle of care. Involve professionals, friends, family, employer, whoever seems appropriate.