A 4-year journey of completing your college degree begins with the first class/semester.
Whatever you're doing, starting can be the most difficult hurdle to overcome. Taking the first steps is essential to starting your journey, no matter what it is.
If you have a huge task, the best thing you can do is just start. Baby steps if you have to. I know first hand that writing a novel is a daunting task. But as each page, paragraph, and sentence is written, the closer I am to completing it.
Start small if you have to.
What you may find is that once you start, continuing the journey and completing it is easier than you think.