A real guru teaches according to the previous masters. He is the humble servant of his guru. His teaching process is very simple. If we find someone, who is teaching surrender to God, is coming in a line of such gurus and is humbly following his master, then he is the right guru.
It is not a question of mystic powers; it is not a question of magic shows. It is not a question of guru who reads minds, or creates articles out of the veneer, or has millions and billions and trillions of disciples. A guru is simply a humble servant of the Lord teaching us how to be a humble servant of the Lord, according to the word of scriptures and according to the previous saints. That is all. He simply presents the truth in his life and in his words.
If we are sincere, we understand these things and we search, then God will lead us to the proper guru, and the Guru will reveal God to us. It is not very difficult. We need such a person we can trust, “Yes, through this person, I am receiving the divine grace of the Lord.” – Radhnath Swami