in a predicament where any choice is difficult; caught between a rock and a hard place

To be successful in whatever one does; to have things go smoothly as if one has found a source of water on both sides; to be able to draw from a resource at will.

to be able to shoot arrows with either hand

to deliberately avoid a question or topic by talking about something else; to digress from the main point of discussion

the left and right wings of an army

(idiom) stuck between two difficult options; in a situation where one cannot move forward or backward; between a rock and a hard place

capable of using both the left and right hands equally well

left and right wings or factions, especially in a political or military context

to take sides with one party; to be partial to; to be biased toward one side

(variant form) to benefit from every side or have everything go smoothly; to be able to handle a situation with ease and success

surrounded by books and histories; a private collection of literature and historical records

to remain neutral in a quarrel or a conflict; to refuse to take sides

left hook and right hook in boxing; a combination of punches; also used figuratively for "the old one-two"