Writing is easy for good writers. Writing is hard work, even for good writers. There's only one right way to write. There are many effective ways to write.
The writing process is ordered; it goes step-by-step. The writing process goes to-and-fro and sometimes in circles.
Good writers get it right the first time. Good writers rewrite until they're satisfied with their work.
Good writers know everything they want to say before they start. Good writers often find out what they want to say through the process of writing and revising.
Writing is an inborn talent; it can't be learned. Writing is a skill; it can be learned with study and practice.