(idiomatic) all isn’t lost; hope springs eternal

"Everybody’s friend is everybody’s fool"; Being objective and conciliatory with people with whom one has nothing in common is a form of cowardice and a way of avoiding responsibility

it's a waste, all hope is in vain

it's not my fault

every man is the architect of his own fortune

close, but no cigar; a miss is as good as a mile

(idiomatic) idle hands are the devil's workshop

well begun is half done

cleanliness is next to godliness, Being organized makes life much easier.

better safe than sorry