Negative Affect refers to one's experiences of unpleasant emotions and ability to manage or overcome those emotions.

New York University

Three main components:
- Life satisfaction
- Positive affect
- Negative affect

Diener's Model of Subjective Well-Being 

Diener, E. (1984). Subjective well-being. Psychological Bulletin,
95, 542–575.

Life satisfaction refers to one's sense of happiness with or approval of their life and accomplishments. 

Positive affect refers to one's experiences of pleasant or happy emotions on  a frequent basis.