Robert Frost may have named the poem The Road Not Taken to show that the "road less traveled" is often an objection to conformity. Taking the normal path of life usually has a more predictable end or result, whereas taking an alternative path would give you a result different from that of the rest of society. Choosing a more unique route makes "all the difference" in the outcome.
The answer is Perseverance
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Research essay does develop the main point and subpoint
Well, for starters, preparing an outline for an essay test usually helps you think through what you want to cover when writing. It's almost exactly like starting with a stick figure when drawing.
Also, when you plan out what you want to write, it'll be easier, and faster to write. Not only that, but your point will be more clear to your audience if you plan out your essay, versus writing what comes to mind.
If you have a better essay, you're more than likely going to achieve a better grade.
Hope this helped!