Synonyms of gear oneself up in English:

gear oneself up

See definition of gear up


1‘the band are gearing themselves up for a massive party’

get ready, prepare, make preparations, arrange things, make provision, get everything set, take the necessary steps, do the necessary, lay the groundwork, do the spadework, gird up one's loins, kit oneself out, rig oneself out, arm oneself
informal psych oneself up