The person in material consciousness is convinced by false ego that he is the doer of everything. He does not know that the mechanism of the body is produced by material nature, which works under the supervision of the Supreme Lord.
In below text of Bhagavad Gita Lord says Everything is being done by the direction of prakrti, nature.
Bhagavad Gita Chapter 3
TEXT 27
prakrteh kriyamanani
gunaih karmani sarvasah
ahankara-vimudhatma
kartaham iti manyate
gunaih karmani sarvasah
ahankara-vimudhatma
kartaham iti manyate
SYNONYMS
prakrteh--of material nature; kriyamanani--all being done; gunaih--by the modes; karmani--activities; sarvasah--all kinds of; ahankara-vimudha--bewildered by false ego; atma--the spirit soul; karta--doer;aham--I; iti--thus; manyate--thinks.
TRANSLATION
The bewildered spirit soul, under the influence of the three modes of material nature, thinks himself to be the doer of activities, which are in actuality carried out by nature.
So nature is superior than us. We have to accept it. Because we are being directed by nature.
