“A matter of time”

“A slippery slope”

A situation that can quickly lead to worse problems.

“A numbers game”

A situation where success depends on trying many times.

“A losing battle”

A fight or effort that is unlikely to succeed.

“A rough patch”

A difficult period of time.

“A long way off”

Far in the future or far from being ready.

“A race against time”

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

“A level head”

Calm and sensible thinking.

“A hidden gem”

Something excellent but not widely known.