autotelic
An autotelic person, a person with an autotelic personality.
Measuring autotelic personality similarly with young adults, Hektner (1996) confirmed that autotelics were least happy and motivated in apathy (low-challenge, low-skill) situations, whereas nonautotelics (those least motivated in high-challenge, high-skill situations) did not find the apathy condition aversive.
Where it comes from
From Ancient Greek αὐτός (autós, “self”) + τέλος (télos, “result; end”); compare auto- and telic. From early 20th century.
Adapted from the Wiktionary entry autotelic (CC BY-SA 4.0).