How can I make him see his colleagues will look down on him if he says in the same old rut?

Besides, he fell back into the old rut of his life.

The road going north is rutted, but they're real old ruts.

And not wanting to blast the thinking patterns out of the old rut.

Because the same old rut has evidently been good enough for you.

But her mind, soon enough, found the way to join an old rut to a new destination.

Plenty of men couldn't settle back into the old ruts after the war.

But looking outside the stock market, Japan seems in the same old rut.

It was kind of comfortable back in the old rut.

Up until that time man had stumbled along pretty much in the same old ruts.