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.
Transcendentalism is based on personal experience, everyone needs to trust their intuition. Even though we all look at the same "stars", we interpret things differently and they effect us differently as well.
"The first step towards getting somewhere is to decide that you are not going to stay where you are." unless where you are now is where I am because nowhere else is going to give you the adventure I can