The influence of FOMO is pervasive i.e. deep and wide , in my mentality and in our society, culture and /collective psyche/. It takes many shapes and forms which required different descriptive words and metaphors.

I am a person of written words, abstract words, precise words. I need these words to reason, analyze, clarify, solve problems, discover and understand myself.

— FOMO/FOLB is a good pair. Compact form, good for blog titles
— kiasu  — rich meaning in Singapore. Same scope as FOMO.
— inferiority complex — rich meaning
— exclub — short acronym with fairly rich meaning.
This word has no online literature as FOMO/kiasu have. I have a /free hand/ to define its usage scope
— vainity — (虚荣) an actual English word !
— 虚空 — rich Buddhist meaning, different emphasis from FOMO.