It sounds like you're starting to form a sentence about making a public speech! If you'd like to complete or expand on that thought, here are a few ways you could continue:

- "Making a public speech is the thing that terrifies me the most."
- "Making a public speech is the thing I'm most looking forward to at the conference."
- "Making a public speech is the thing that can really make or break your career in politics."

Is there a specific aspect of public speaking you'd like to discuss or get advice on? Or did you have a different completion in mind for your original statement?