People think they completely control their destinies, but they are always under nature’s law of karma:
prakriteh kriyamänäni
gunaih karmäni sarvasah
ahaìkära-vimüdhätmä
kartäham iti manyate
“The bewildered spirit soul, under the influence of the three modes of material nature, thinks himself to be the doer of activities that are In actuality carried out by nature.” (Bg. 3.27) The source of this bewilderment is that the living entity thinks, “I am this body.”