Yena tena prakarena Krishna nivashiyet, somehow or other become Krishna conscious. This principle in many ways was the guiding principle for Srila Prabhupada's Hare Krishna movement. This principle was given some 500 years ago by Srila Rupa Goswami - that somehow we must find ways to induce our consciousness of God or Krishna.
If we look at this phrase deeper, we will learn that it requires faith upon Krishna or God to be conscious of Him. To the degree one has faith, to that degree, one will be conscious of Krishna at all times. This is the basic idea. So who ever is giving Krishna upadesh (instructions), the sole purpose is simply to induce or strengthen one's faith upon God or Krishna (according to time and circumstance). When faith in God grows nicely, all problems will be solved.