Examined relations between characteristics of personal goal strivings (e.g., importance, past attainment, effort) and components of subjective well-being (positive and negative affect and life satisfaction). 40 undergraduates generated lists of their personal strivings and rated each striving on a series of dimensions. Ss also recorded their moods and thoughts by use of an experience-sampling method on 84 occasions over a 3-wk period. Positive affect was found to be most strongly related to striving value and past fulfillment, whereas negative affect was associated with low probability of future success, striving ambivalence, and between-striving conflict. Striving importance and instrumentality (low conflict) were the strongest predictors of life satisfaction. Possible explanations for the connections between striving fulfillment and positive affect and between striving conflict and negative affect are discussed. It is concluded that the concept of personal striving is a useful heuristic device for understanding individual differences in subjective well-being. The concept is proposed as an alternative to the traditional trait approach to personality. (71 ref) (PsycINFO Database Record (c) 2016 APA, all rights reserved)