It's probably the most stereotypical stories in fantasy and (less so) sci-fi. The most obvious examples being Frodo and Luke Skywalker. A simple person, often leading a simple and boring life until something comes along and changes it all.
So how do you avoid having this type of story in your novel?
I can understand wanting to stand out from the pack as far as your story goes, but I think that the majority of readers/viewers still find the “farmboy” story the most satisfying.
It’s the quintessential plot of many novels, not just SFF but all genres, and for good reason. I’m not talking stories with a farmboy specifically, but stories that start out with your average Joe Q. Anybody as the protagonist.
Farmboy/Joe Q. Anybody = A person of no known estimable talents who suddenly experiences something new that affects their whole life. It boosts them from their everyday, humdrum, boring rut and forces them to change and adapt, through a series of ordeals, trials and tribulations – until, eventually, they become a greater person.
It’s the most satisfying because it allows the average reader –
whether it’s a student who’s swamped in schoolwork and feeling the angst and pressures of teenage social life,
or an adult worker who’s wallowing in bills and lost among the grey masses while commuting to their boring job that they’ve come to despise,
or a housewife/parent who has a thousand similar, dreary days of housework, cooking, cleaning, raisng the children etc –
to escape and enter a story that, in a way, offers hope for themselves and their own situation. It makes them feel good by showing a person in similar straits overcoming and accomplishing something of great stature. It is something they can relate to.
It also feeds that inner hope we all have that, yes, we are special, we are somebody and someday, we’ll be able to let others see that.
This storyline plays on basic, primal human emotions. It strums those chords we all have within us, and that’s why it’s still being done after so many millenia.
The problem for many, fantasy-wise, is that with most medieval-type fantasies, the most common, average person was usually a farmboy. So with those types of stories, especially if they're not done well, the character feels played to death.
As has been said, what’s more important is the execution. It’s all in how you do it. But I don’t think there’s anything wrong per se with this type of story.
It’s the story of the human race.
It’s the story of a person, kicked out of their cave, who must now walk that road. The road that leads from 'Who He Is' to 'Who He Wants To Be'…