Does this sound interesting/good for this common app prompt?

Discuss an accomplishment or event, formal or informal, that marked your transition from childhood to adulthood within your culture, community, or family.

I selected this prompt. I’m having trouble with it. I decided to write about taking the metro bus by myself for the first time.
Does that sound any good for this topic? This is the only thing that comes to mind.

It could be good, as long as it marks a transition to adulthood within your culture, community, or family.