This is SO TRUE - You really don't understand it fully until it happens to you. "There are some people who could hear you speak a thousand words and still not understand you. And there are others who will understand without you even speaking a word.
Stop asking yourself what if you can't do it, and instead as yourself what if you can? What if you can write a bestselling novel? What if you can accomplish your dream to be a published writer? If you're willing to work for it, you can.