When we fill ourselves with the words of the Psalms something can begin to ingrain in our hearts that lets our minds be directed by the spirit contained in the verses. As we are filled full it allows for something of the nature of an autopilot navigation whereby we are moved to act according to the spirit of the Psalms that we have come to love. Read and consider the verses and a course can be set for our lives. A compass can be set for the choices we make from our hearts and minds unified as one.