怡然自得

happy and content (idiom)

harmony / pleased

happy / joyful

correct / right / so / thus / like this / -ly

self / oneself / from / since / naturally / surely

contented / pleased with one's position

to obtain / to get / to gain / to catch (a disease) / proper / suitable / proud / contented / to allow / to permit / ready / finished

structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc

to have to / must / ought to / to need to