Hard work is on the other side of those great achievers and successful people. "Great achievements are not a one step process. One has to work through many steps." Each step is like a battle which must be won with lots of energy , preparation and effort . To climb to the top we need perseverance, determination, passion (or madness) and motivation. These are the fuel of our success. As we climb up, not every time things will happen according to our wishes. We also need to deal with failures and understand why there were failures. After defeating failures, we can climb to the next step.
Life is simple but we insist on complicating it.