Final answer:
The term for happiness and fulfillment gained through professional work is occupational wellness, a key aspect of an individual's overall well-being and job satisfaction.
Step-by-step explanation:
The level of happiness and fulfillment you gain through your professional work is known as occupational wellness. This area of wellness is part of the larger field of health and wellbeing, which encompasses various dimensions such as physical, mental, emotional, and social health. Within occupational wellness, job satisfaction is a key component, and research indicates that factors such as autonomy and work content can be strongly predictive of overall job satisfaction. Moreover, organizational psychology within I-O (Industrial-Organizational) psychology specifically measures job satisfaction. Other areas of wellness covered by the Well-Being Index include Life Evaluation, Emotional Health, Physical Health, Healthy Behavior, Work Environment, and Basic Access.