Elevated levels of dopamine and other catecholamines above baseline are associated with elevated mood and well-being.

“Conversely, when an individual has elevations in dopamine and serotonin levels, in particular dopamine levels and the other so-called catecholamines, which include epinephrine and norepinephrine. So the catecholamines are dopamine, epinephrine, and norepinephrine. They're all very similar biochemically. They all lead to states of elevated motivation, energy, and so on. When those chemicals are elevated above baseline, people do tend to have elevated sense of mood and well-being, and in particular sense of possibility about what they can do in the world and what the world can offer them.”