Geniuses are commonly characterized by excessive drive for achievement. They identify an opportunity for success and follow it without any interruption.
A genius child can never be stopped from pursuing a goal. Regardless of what it may cost to achieve the goal, such a child will work out all possible ways in order to have it at the end. Whether they are trying to dismantle a marble or a toy, they do not stop it until they have finally discovered or obtained what they are looking for. Their drive keeps them going throughout life, seeking their success and that is how they achieve in life.