Objective: To develop an instrument to assess environmental, emotional, spiritual, physical, social, and intellectual health and wellness. Methods: Reliability was assessed using 102 respondents who completed the OLP on 2 occasions. Concurrent validity was assessed using a second sample of 34 respondents and a panel of 6 experts. Results: Most items had high test-retest correlation coefficients. Each dimension had high internal consistency (ie, high Cronbach Alphas). Independence of items in each dimension suggested good divergent and convergent validity. Conclusions: The OLP is a reliable and valid instrument for assessing dimensions of the Total Person Concept.