I remember telling a therapist about various negative thoughts I'd had towards myself, and she said "Now imagine that a friend told you all those things. How would you respond?". The sudden shift in perspective from that simple question was huge. I went from "I'm clearly hopeless" to "Perhaps I do have worth".

Ontop of that, it's a powerful thing to encourage someone to do the work themselves rather than doing it for them. Similar to how people often learn mathematics better by solving problems than by reading textbooks.