There is a big difference between concentration and meditation. Concentration requires practise. Meditation is a natural state. We know that wherever we find interest, our mind focuses without any effort. Nobody has to tell us to concentrate when we are watching a film in the cinema. The reason for this is because we find interest there. We need to feel that happiness that can be experienced by realising God.
The reason why we cannot experience this happiness is because illusion comes between God and us. If we get rid of illusion, then we shall experience the happiness that can be achieved by realising God. As soon as we experience this happiness, we will not need to make a conscious effort to meditate upon God, it will occur naturally.
