Not strength. Not lack of knowledge. But will. Sheer will that enables one to push through the storms or hurricane to reach the destination called success. You see, with a strong impenetrable will, you can literally gain strength and the knowledge that you need. However, without it, it is almost impossible to weather the impending hardships that you will have to face. And one thing for sure, it is not something that you are born with. But in can be cultivated with a strong and clear reason as what it exactly is and why do you have to achieve it.