“Take a back seat”

“A slippery slope”

A situation that can quickly lead to worse problems.

“A new lease on life”

A renewed energy, purpose, or opportunity.

“A numbers game”

A situation where success depends on trying many times.

“A matter of time”

Something that will certainly happen eventually.

“A losing battle”

A fight or effort that is unlikely to succeed.

“A rough patch”

A difficult period of time.

“A race against time”

A situation where one must act quickly before time runs out.

“A needle in a haystack”

Something very difficult to find.