The only way to learn what meditation means is to practise and keep on practising. This involves daily withdrawal from the round of routine and activity, of about three-quarters of an hour if possible, and the practice of some exercise regularly. The form which such an exercise should take depends partly upon your own preference. It may be any of the set formal exercises in books published, or it may be a subject taken from a sentence in some inspired writing whose truth has struck the mind forcibly; it may be a quality of character whose need in us has made itself felt urgently, or it may be a purely devotional aspiration to commune with the higher self. Whatever it is, the personal appeal should be sufficient to arouse interest and hold attention. This being the case, we may keep on turning over the theme continually in our thoughts. When this has been adequately done, the first stage (concentration proper) is completed. Unfortunately most of this period is usually spent in getting rid of extraneous ideas and distracting memories, so that little time is left for getting down to the actual concentration itself! The cure is repeated practice. In the next stage, there is a willed effort to shut out the world of the five senses, its impressions and images, whilst still retaining the line of meditative thinking. Here we seek to deepen, maintain, and prolong the concentrative attitude, and to forget the outside environment at the same time. The multiplicity of sensations--seeing, hearing, etc.--usually keeps us from attending to the inner self, and in this stage you have to train yourself to correct this by deliberately abstracting attention from the senses. We will feel in the early part of this stage as though we were beating against an invisible door, on the other side of which there is the mysterious goal of your aspiration.
-- Notebooks Category 4: Elementary Meditation > Chapter 1: Preparatory > # 231
-- Perspectives > Chapter 4: Elementary Meditation > # 18