Really hard. It just is. As soon as you accept this, you can stop resisting, and start putting your energy toward moving forward.
Don’t bother looking for shortcuts. It takes time and hard work.
Don’t listen to charlatan’s who say it’s easy. Writing is never easy, and on some days it’s not even fun. But for writers, writing is the only thing worth doing.
“Writing a book [substitute your favorite genre for book] is a horrible, exhausting struggle, like a long bout of some painful illness. One would never undertake such a thing if one were not driven on by some demon whom one can neither resist nor understand.”–George Orwell, author of literary classics 1984 and Animal Farm