on your mind
Examples
Formulate and stamp indelibly on your mind a mental picture of yourself as succeeding. Hold this picture tenaciously. Never permit it to fade. Your mind will seek to develop the picture... Do not build up obstacles in your imagination.
Genius is the ability to put into effect what is on your mind.
Don't rely on your mind for liberation. It is the mind that brought you into bondage. Go beyond it altogether.
I'd much rather have the honesty than not. Because if you will say what's on your mind and get it off your chest, then the sooner I can prove you wrong!
I think it is incredibly important to be open and accessible and treat people fairly and look them in the eye and tell them what is on your mind.
Age is no barrier. It's a limitation you put on your mind.