What is the theme of the book "Hatchet"?

There are numerous themes in "Hatchet" by Gary Paulsen, including: man versus nature, the power of positive thinking, initiation into manhood and contrasts between wilderness and urban environments.

Author Gary Paulsen uses the theme of man versus nature in much of his work, including "Hatchet." Though numerous themes are used throughout the book, man versus nature plays an important role. In this novel, the main character, Brian, must struggle against nature but also learn to live harmoniously within nature. He learns to recognize the dangers present in nature but also to marvel at it. Through his experiences, he grows and learns to survive.