Those two personality factors can be considered as a component of disposition. Two publications established that extraversion and neuroticism as being the most correlated with emotional processing.
In "Adding Liebe und Arbeit: The Full Five-Factor Model and Well-Being" from McCrae et al (1991), the authors correlated three measure of weel-being with 429 adult men and women.
Consistent with previous rescarch, neuroticism was negatively, and
extraversion was positively, related to well-being. Both agreeableness
and conscientiousness were also significant independent predictors
In "The happy personality: a meta-analysis of 137 personality traits and subjective well-being" by DeNeve et al (1998) examine 137 personality constructs across 9 literature search strategies to find determine the effect on positive and negative affect.
The traits most closely associated with SWB were
repressive-defensiveness, trust, emotional stability, locus of
control-chance, desire for control, hardiness, positive affectivity,
private collective self-esteem, and tension. When personality traits
were grouped according to the Big Five factors, Neuroticism was the
strongest predictor of life satisfaction, happiness, and negative
affect. Positive affect was predicted equally well by Extraversion and