While creating new ventures, entrepreneurs are exposed to conditions known to generate high levels of stress(e.g., rapid change, unpredictable environments, work overload, personal responsibility for others). Thus it has been assumed that they often experience intense stress.A markedly different possibility, ,however,is suggested by Attraction-Selection-Attrition (ASA) theory. This perspective suggest that persons who are attracted by,selected into, and persist in entrepreneurship either voluntarily or in voluntarily.As a result,founding entrepreneurs as a group are predicted to experience low rather than high levels of stress while running new ventures.Results supported this reasoning: Founding entrepreneurs reported lower levels of stress when compared to participants in a large national survey of perceived stress. Additional findings indicate that entrepreneurs relatively low levels of stress derive at least in part from high levels of Psychological capital was negatively related to stress and stress in turn was negatively related to entrepreneurs subjective well -being .Furthermore,and also consistent with ASA theory, the stress-reducing effects of psychological capital were stronger for older than younger entrepreneurs.