Work activities are most likely to foster happiness when they promote

When they promote the experience of flow.
the experience of flow refers to the mental state when someone could fully feel focused and energized in doing the task at their hand.
The experience of flow will not only make your job feel like a recreation, but will also make you feel attached to your job, which more likely to increase the quality of your job result

Vanessa had a dream to be a ballerina. with her father's she had that opportunity.