"A Calculated amount of risk provides you the opportunity"

This is the saying which i have listen from my Grandfather...He always told me "Naresh never get affried to take calculated amount of risk...because a person who never take a chance never succeed" And i realize this when i was working in my previous company and start taking a calculated amount of risk. I again wants to mention that there is a lots of difference between "Calculated risk and Risk" so the most important task is find the option which provide the Calculated risk not the Risk.