The eightfold path of yoga ashtanga
 

Dhyan is the exploration of consciousness.. What are mind and consciousness? To enter consciousness and grasp the Self/Atman niyama is required. The mind is deceptive and is what Christians refer to as Satan. If one doesn't escape the prison of mind and flesh they remain in a matrix of linguistic constructs. That is not reality.

May all be happy!

The eight limbs of yoga are
1)yama (abstinences)
2)niyama (observances)
3) asana (yoga postures)
4) pranayama (breath control)
5) pratyahara (withdrawal of the senses)
6)dharana (concentration)
7)dhyana (meditation)
8)samadhi (absorption)