It is not possible for everyone to reach the same level of meditation……
“It is not possible for everyone to reach the same level of meditation (Dhyānam),
even meditation should be taught or presented in stages (viniyoga).
It should be used at a level suitable to the student and gradually increased,
start simply and increase in complexity.
This is dependant on the growth of the student and according to the purpose.”
– From study notes with TKV Desikachar England 1992