Final answer:
Based on inference from the provided texts, the character John likely becomes more confident and aware of his strengths by the end of 'Water Never Hurt a Man,' learning from the adversities he confronts.
Step-by-step explanation:
The events of the story "Water Never Hurt a Man" seem to revolve around themes of resilience, personal growth, and the confrontation of one's fears. While the exact answer to how the character John changes by the end of the story is not directly provided in the excerpts, one can infer that the events he experiences likely lead him to become more aware of his own strengths and abilities in the face of adversity. The characters in the provided texts all undergo situations that test their resolve, and often these experiences culminate in individual growth, increased confidence, or a change in perception. Such a transformation could be similar to John's, where he becomes more confident in his capacity as a driver boy on the canal after overcoming challenges and learning from them.