“A hard nut to crack”

“Hard sell”

An aggressive way of trying to sell something.

“Hard to swallow”

Difficult to accept or believe.

“Boil down to”

To have something as the main point or reason.

“A tough act to follow”

Someone or something that is hard to match or replace.

“Nothing to write home about”

Not special or impressive.

“Come to terms with”

To accept a difficult reality.

“Not have a leg to stand on”

To have no support for an argument.

“Good things come to those who wait”

Patience can bring good results.