One of my favorite movies is 'Romancing the Stone' with Michael Douglas and Kathleen Turner. (Yes, I am a creature from the 80's. I was the best decade for music and movies!)
If you've seen the movie, you know it is about Joan Wilder the romance novelist. I watched her type on a manual typewriter, bawling her eyes out, living the story. She never makes a mistake! I can't type three words without having to correct something.
At the end, she rips out the last sheet (my typing teacher would have cracked me over the head) and adds it to the large stack. She puts the stack in the envelope and Voila! off to her publisher. I know many writers, myself included (if I can humbly say that I am a writer), and no one writes like Joan Wilder! There are revisions, critiques, rewrites, etc. It takes a long time. It's not easy!
Many people think if you write children's books, it's the easy way out. You have to advance to writing for adults. Not so! Writing for children much more difficult. You have to see the world as a child, write something children will love, leave half the story for the illustrator, write so the parents will love it, and don't forget--minimal word count.
If writing were like the movies make it seem...the world would be filled with writers! It is an arduous task. You have to love it and put in the effort to succeed.