The easiest way to control the mind, as suggested by Lord Caitanya, is chanting “Hare Krishna,” the great mantra for deliverance, in all humility. Bhagavad-Gita, 6.34 Purport.
There may be so many impediments for a person who is chanting Hare Krishna. Nonetheless, tolerating all these impediments, one should continue to chant so that at the end of one’s life one can have the full benefit of Krishna consciousness. Bhagavad-Gita 8.5 Purport.
The Lord does not say that one should give up his prescribed duties or engagements. One can continue them and at the same time think of Krishna by chanting Hare Krishna. Bhagavad-Gita 8.7 Purport.