The ideal of a mystic is never to think of disagreeable things. What one does not want to happen one should not think of. A mystic erases from his mind all the disagreeable things of the past. He collects and keeps his happy experiences, and out of them he makes a paradise. Are there not many unhappy people who keep part of the past before them, which causes them pain in their heart? Past is past; it is gone. There is eternity before us. If we want to make our life as we wish it to be, we should not think disagreeable thoughts and ponder over painful experiences and memories that make us unhappy.