count your blessings

"Count your blessings" means "to think about the good things in your life, often to stop yourself becoming too unhappy about the bad things."

Eg. School children today should count their blessings. At least they're not beaten for talking in class as we were.

A bird in the hand (is worth two in the bush).

A bird in the hand (is worth two in the bush). means

something that you say which means it is better to keep what you have than to risk losing it by trying to get something better

Eg. If I were you I'd accept the money they're offering. After all, a bird in the hand...

on the brink of a (nervous breakdown)

on the brink of something: (brink: edge, verge)
if someone or something is on the brink of a situation, that situation is likely to happen soon.

eg. The country is on the brink of civil war.

down-at-heel

"down-at-heel" means badly dressed or in a bad condition because of a lack of money.

eg. When I first met her she was down-at-heel but still respectable.
The play was set in a down-at-heel hotel in post-war Germany.