Every story has a problem. Anyone who has ever taken and endured a creative writing course has heard it stressed. The elements of plot always include complications. Without a problem there is no story.
We take apart the earliest, easiest fairy tales, and from these we glean milestones of the tried and true. Stories that have endured for generations, passed along by word of mouth and changed very little over the years, have a rich treasure to unlock.
What's the problem in The Three Little Pigs? Obvious. How about in The Gingerbread Man, Jack and the Beanstalk, or Goldilocks?
How about the storyline in comic books? Sure, they are not "great" as literary critics would measure, but they work very nicely at drawing audience attention and catching up even the youngest imaginations into a fantasy of good vs. evil.
Sometimes it's not so much being "good" at your craft as it is writing what works. Maybe you'll never win a coveted award, but when you learn to send it flying off the shelves or onto their digital devices in dozens by the hour, you will have felt victory about which many will only dream.