One should not attempt to take on more than one can handle.

Alternative form of one's got to do what one's got to do

A person must do what he or she feels obliged to do.

Alternative form of when one door closes, another opens

Alternative form of when one door closes, another opens

Synonym of know one's ass from a hole in the ground

One is able to express thoughts, criticism, or insults towards others, but cannot accept being on the receiving end of the same treatment.

(cliché, idiomatic) (used imitatively) A cliché used to exaggerate an accomplishment or milestone.

Alternative form of one can't hold two watermelons in one hand

(idiomatic) To speak lacking expertise, authority, or knowledge; to invent or fabricate facts. / (idiomatic) To assert something as true or valid; to bluff.