A caution that the activity being described or demonstrated is not safe for ordinary members of the public to attempt.

(humorous) A term often used after a person claims to have no expertise in a topic of discussion, but still wants to contribute a comment.

Synonym of if it ain't broke, don't fix it

Persistence is important in the pursuit of success.

(informal) Do not give in to petty problems; don't worry about insignificant matters.

Don't do anything you are paying a more qualified person to do.

Indicates to the interlocutor not to worry about something.

Alternative form of better the devil you know than the devil you don't know

Something bad and familiar is better than something bad and unknown.

Alternative form of better the devil you know than the devil you don't know