HI! Keep in mind that a rhetorical question basically asks the same thing twice, or inquires about something that is already a given. Example: What color is her white horse? That would be rhetorical or: This sunny day is pretty, isn't it?
Now for success here are some questions that may help:
Are successful people born or made?
To what extent having success means being successful?
Does success equal superiority?
How can you measure how successful a success actually is?
When is a success actually "successful"?
What is the different between true success and a good opportunity or chance?
How can you measure success as greatness?
Why do people value success?
When is success NOT successful?
How can success serve as a motivator?
What is the most important benefit of success?
What is the fist word that comes to mind when hearing that someone is "successful"?
What are some steps to reach success in life, or at a specific task.