Once a devotee who had been initiated by Sri Swamiji visited after a long gap. Sri Swamiji asked him upon seeing him, "I have initiated you already into a specific mantra. But you have not been chanting it"
This devotee incidentally was practicing some other sadhanas ignoring the mantra given by the Guru.
"Will I progress as you told me at the time of initiation?"
Sri Swamiji said "I have sown a particular seed in you. But you are interested in growing your own plant. Therefore the progress will not be as expected"