tasya bhūmiṣu viniyogaḥ
Application of this depends upon the level you have reached
This practice needs to regard the different stages and the special circumstances of each person. The object of your saṁyama should be picked according to your own attributes, interests and well-being. Steady progress is made by taking well adjusted steps along the path.
Damian Cadman-Jones is an authorised teacher of Prana Vashya Yoga™