Srinagar: If success is a habit, Mohsin Raj Mantoo, a 29-year-old doctor from Kashmir has internalized it so much that it is second-skin to him. No challenge is insurmountable, no destination out of reach. To prove it, he scored a perfect hattrick by topping all three Super Speciality examinations in AIIMS, NEET and PGI. Hailing from Anantnag district of South Kashmir, the young doctor with a self-effacing demeanour, was an ace student right from his…