Doubt accompanies Artists on their paths.
That doubt can lessen as skill develops. But it takes some time. And even then, the doubt never really leaves.
We forget how difficult it can be once we get to a certain point of skill and confidence. When an opportunity arises to help someone who is still overshadowed by their doubts, take it. Doing so helps remind you how strong those doubts can be without becoming a victim to them once again. Show that you understand where they are and, more importantly, that the doubts can be overcome.