This research aimed to identify the nature of the structural model of the relationships between subjective-happiness, self-compassion and each of proactive strategies, Teacher's work engagement and perceived work environment. To achieve that; a total of 316 Teachers in Sharkia and Dakahlia Governorates (122 males-194 females) (Mean ± SD = 39.6 ±13.7) completed scales of subjective-happiness, self-compassion, proactive strategies, Teacher's work engagement and perceived work environment. Results showed that there are no statistically significant differences between the mean scores of teachers in the research variables according to the gender (male-female) or the education style (governmental-private), while there were statistically significant differences at (0.05) between the mean scores of teachers in subjective-happiness and Proactive strategies according to the years of experience, and at (0.01) between the mean scores of teachers in the perceived work environment, however there were no statistically significant differences between the mean scores of teachers in both self-compassion and work engagement according to years of experience.In addition the subjective-happiness was found to be predictive of each proactive strategies, work engagement and the perceived work environment. It was also possible to reach a structural-causal model that clarifies the relationships between subjective-happiness, self-compassion, proactive strategies, work engagement, and the teacher's perceived work environment. Key words: Subjective-happiness, self-compassion, proactive strategies, work engagement, and perceived work environment