think of me and you will be alright

I had also at this time a more serious trouble. I had been practising breath control (pranayama) as taught by Swami Ramtirtha in his works. There came a stage when I felt a terrible sensation as though my head would crack and break into pieces. Then I stopped doing it, but every day the sensation was recurring at the time of practice and the fear was growing that disaster was imminent. So, at dead of night, when Bhagavan was alone, I approached him with my tale. He said laughing, "What! Again you are seized with fear! These are the usual experiences of people who do yogic exercises without the immediate guidance of a Guru, but having come to me, why should you fear?"

Then Sri Bhagavan added in an undertone: "Next time you get that sensation, you think of me and you will be all right." From that moment to this I have never felt it again.

~ G. V. Subbaramayya, Sri Ramana Reminiscences (As I Saw Him, from The Maharshi)