Tulasi Dasa says "binu hari krpa milahin nahin santa." And the other side of this is, "bina santa krpa milahin nahin hari." In other words, by the grace of the Supreme Lord, one gets a sadhu and by the grace of the sadhu, one gets the Supreme Lord.

Both are interrelated. You see, Dhruva's mother told him to chant the Name of the Supreme Lord with faith, even though she was not a saint. Yes, she was a patha-pradarsaka guru, not a tattvika guru or srotriya brahmanistha guru. What was the result of that? Dhruva started calling out for the Lord with faith and as a result, he met a sadhu. He met Narada Goswami. Then Narada Goswami gave him a mantra and taught him the process of bhajan. Shortly after that, Dhruva attained the Supreme Lord.

So the conclusion is that one first gets a suddha bhakta or guru by the mercy of Sri Hari and then one gets Sri Hari by the mercy of guru.