Samyama is dharana, dhyana and samadhi practised together or the journey between them. Where the observation becomes the observing.... light into light... spirit into spirit... Concentration of one point is a practice that can lead to the absorbtion into the moment and back pulsing through the one pointedness into ultimate expansion and back and forth. This applied in asana allows one stay present and their minds flow like "oil from a jug" -BKS Iyengar.
Practice with a liquid mind on the mat and it's more likely to poor over into your everyday life.