Certainty around the fact that I’m THE ONE to help them!

I’m getting consults and I’m really excited about it! I did enough self-coaching, I just need to take action! But I have the thought coming back that says something like “I’m not sure that ‘I’, ‘me’ will be THE perfect one to help them! And I really want to focus on THEM and not on myself but sometimes, I’m not sure I’ll get the right question to help them! Could you recommend a few empowering questions that could help me believe in the fact that I am indeed the perfect one? 🙂