Verb
To put into brisk or vigorous action; to move with life and vigor; -- usually with the reciprocal pronoun.
Source: Webster's dictionaryIf we bring not the good courage of minds covetous of truth, and truth only, prepared to hear all things, and decide upon all things, according to evidence, we should do more wisely to sit down contented in ignorance, than to bestir ourselves only to reap disappointment. Frances Wright
Hutton became very critical of a system where appointments depended not on merit but on the support of those in power. Of one possible opening for Watt he wrote, ‘I think it only needs to have a man properly bestir himself but that is what few political people do unless to serve themselves. Stephen Baxter
The same feeling of not belonging, of futility, wherever I go: I pretend interest in what matters nothing to me, I bestir myself mechanically or out of charity, without ever being caught up, without ever being somewhere. What attracts me is elsewhere, and I don't know where that elsewhere is. Emil Cioran
Man, if thou art aught, strive to walk alone and hold converse with yourself, instead of skulking in the chorus! at length think; look around thee; bestir thyself, that thou mayest know who thou art! Epictetus
Even as bad actors cannot sing alone, but only in chorus: so some cannot walk alone. Man, if thou art aught, strive to walk alone and hold converse with yourself, instead of skulking in the chorus! at length think; look around thee; bestir thyself, that thou mayest know who thou art! (103). Epictetus
He finally bestirred himself Source: Internet