Quantitative data and descriptive data (written self-evaluation and journal entries) were collected from young adults participating in a standard 26-day Outward Bound course during a quasi-experimental control group design experiment to determine the degree to which participation in a high risk wilderness program leads to self-discovery, associated with changes such as increased feelings of self-worth and self-reliance. Results showed significant increases in self-esteem and self-assertion for male and female participants. Females decreased in their belief that events were controlled by powerful others and chance, while males increased in internal locus of control orientations. Results lead to the conclusion that the structured wilderness experience provides an important medium for enhancing the personal development of young adults. Descriptive results revealed components of the process of change associated with participation in a wilderness program. Changes in self-esteem and personal control were attributed to successful accomplishment of difficult activities, supportive group environment and intense personal interactions, wilderness environment, and increased self-awareness which included recognition of both strengths and weaknesses leading to a more realistic self-image. (NEC)