I can only tell you what I know from my own experience. When I met my Guru, he told me: 'You are not what you take yourself to be. Find out what you are. Watch the sense 'I am', find your real self'. I obeyed him, because I trusted him. I did as he told me. All my spare time I would spend looking at myself in silence. And what a difference it made, and how soon! It took me only three years to realise my true nature. My Guru died soon after I met him, but it made no difference. I remembered what he told me and persevered. The fruit of it is here, with me.