Meditation is usually thought of as doing some activity, such as engaging techniques.  For example, we are taught to sit still and concentrate on a sound or watch the breath, etc.  However, true Meditation is an inner attitude or condition of Space that is our true Nature.  This new condition is based upon a realistic program of Self-knowledge, the ancient art of Self-Observation.  This is actually a science, because there are specific methods to engage this type of inquiry.  When we understand how our mind works, we can then let go of older patterns that block our true nature.  Then we can enter the condition of Meditation at just about any time we choose (or perhaps, when it chooses us).