self-contented

The writing can’t get far enough out in front of the Holocaust not to drown in a self-contented sense of romance.

From New York Times ● Jan. 3, 2020

Thus you will come in contact with larger conceptions, fuller ideas, deeper sympathies, higher aspirations than is possible where you follow the ordinary routine of the ordinary, mediocre, self-contented man.

From The Lake of the Sky Lake Tahoe in the High Sierras of California and Nevada, its History, Indians, Discovery by Frémont, Legendary Lore, Various Namings, Physical Characteristics, Glacial Phenomena, Geology, Single Outlet, Automobile Routes, Historic Towns, Early Mining Excitements, Steamer Ride, Mineral Springs, Mountain and Lake Resorts, Trail and Camping Out Trips, Summer Residences, Fishing, Hunting, Flowers, Birds, Animals, Trees, and Chaparral, with a Full Account of the Tahoe National Forest, the Public Use of the Water of Lake Tahoe and Much Other Interesting Matter by George Wharton James

Carmichael was much tried by the baser of his fellow-students, especially a certain class of smug, self-contented, unctuous men, who neither had endured hardship to get to college, nor did any work at college.

From Kate Carnegie and Those Ministers by Ian Maclaren

Before long he even made jokes in a Catonian manner; jokes that were not peculiarly witty, but somewhat gruff and boorish, yet significant of a resigned and self-contented mind.

From Democracy, an American novel by Henry Adams

The man was so prosperous, so self-contented, so conscious of his own merit and success.

From The New Rector by Stanley John Weyman