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Sacrifice, pride, and optimism were assessed among 329 Thai masseuses/female sex workers. Sacrifice was conceptualized as the financial contribution the masseuses made to their families of origin; pride as the positive affect derived from helping family members through their sacrifice; and optimism as the general belief that good things would happen. In this sample, the majority had secondary or higher level of education and earned income higher than national average. Regression analysis with bootstrapping was used to test the mediating effect of pride on the sacrifice–optimism relationship. Over and above the covariates of education and income, results supported the research model: the indirect effect of Thai masseuses' sacrifice to optimism through the mediating role of pride was significant. This suggests a possible role of pride in sustaining Thai masseuses in their work. Beyond understanding the psychological dynamics in this unique population of sex workers, results contributed to the optimism literature by supporting the conceptualization of optimism as a dependent variable.