This study developed a dispositional path model of life satisfaction for community dwelling Chinese elderly living in Hong Kong. A sample of 117 elderly completed scales measuring life satisfaction, optimism, self-esteem, relationship harmony, self-construals, and perceived/expected health and financial status. Modeling revealed that life satisfaction was predicted by self-esteem and relationship harmony, which in turn were predicted by independent and interdependent self-construals, respectively. In addition, optimism predicted life satisfaction directly and indirectly through self-esteem and relationship harmony. Financial status mediated entirely the effect of optimism on life satisfaction. Health status was predicted by optimism but did not predict life satisfaction. Optimism is a key contributor to subjective well being because it fosters self-esteem, relationship harmony, and positive perceptions of financial conditions.