self-glorification (n.)

word forming element indicating "oneself," also "automatic," from Old English use of self (pron.) in compounds, such as selfbana "suicide," selflice "self-love, pride, vanity, egotism," selfwill "free will." Middle English had self-witte "one's own knowledge and intelligence" (early 15c.).

OED counts 13 such compounds in Old English. Middle English Compendium lists four, counting the self-will group as a whole. It re-emerges as a living word-forming element mid-16c., "probably to a great extent by imitation or reminiscence of Greek compounds in (auto-)," and formed a great many words in the pamphlet disputes of the 17c.

early 15c. "admission to Heaven, exaltation" (theological), from Late Latin glorificationem (nominative glorificatio), noun of action from past-participle stem of glorificare "to glorify" (see glorify). General sense by mid-19c. Also in 15c. as a term in alchemy, "action of refining; state of being refined." Gloriation "praising" is from c. 1400.