He had finally managed to smash down the mental barriers in the other's head.

It's just a mental barrier, collectively, that we have to get through.

There had been no barriers between them, physical or mental.

With practice, it might be possible to probe through the mental barriers into the concealed areas.

There was a snap and the mental barrier went out of existence.

She realized he had mental barriers up that put a guard between her and the attacking voice.

With the mental barrier broken, Daniel won three of her next five tournaments.

He must first deal with the mental barriers that players put up.

"They helped us to overcome the, well, let's say the mental barrier."

I took a few moments to make sure all my mental barriers were safely in place again.