While the picture of the unique, suffering genius is a dramatic, it's helpful to remember that determination is a fully human quality that each of us possesses. We just need to wake it up, and let it serve as the fire that fuels our dreams.
Determination requires a road map.
Define a goal for yourself. If you feel overwhelmed at the prospect of figuring out your life's destiny all at once, start small. Allow your inner sense of determination to be honed on things like training for a mini-marathon, improving a relationship, cooking a better meatloaf. Build on these successes as you allow your life's larger goals to unfold in your heart and mind. Action doesn't necessarily mean rashly quitting your job tomorrow and settling in to write your novel.