What don't they know? Are they struggling to listen to their intuition? Maybe they are listening to what others think about their life, instead of tapping in to what they really feel. Maybe the "I don't know" is a form of reaching out, and they just want someone to say, I'll help you, we'll figure this out together, it will be okay.
Whose "I don't know" in your life, could benefit from hearing you say, "it will be okay?"