What convinced Chris that he could survive on meager rations Into the wild?

Chris McCandless believed he could survive on meager rations in the wild due to his strong sense of self-reliance and idealism about nature. He was inspired by literature, particularly the works of authors like Jack London and Henry David Thoreau, which fueled his desire for adventure and self-discovery. His confidence in his skills and knowledge of the wilderness led him to underestimate the challenges of survival, ultimately contributing to his tragic fate.