Use of the word "one" in a sentence?

[Undone430]

I am working on a final draft of my narrative essay and am trying to improve the essay. I had to revise a sentence, because it was rather vague in what I was trying to convey. The essay is all in past tense and is in the first person. The sentence I used in it's place is, "While the notion of moving out on ones own may seem like a marvelous idea, it doesn't always turn out well."

I don't know if using the word "one" should be used. This sentence is being used in the introductory paragraph; right before the thesis statement. Is it okay to keep it there or should I revise the sentence to be in the first person?

[Cerberus™]

It should be possessive, with apostrophe: "on one's own".

It does not seem as if this sentence were mainly about you: it is rather about moving out in general; if this is true, the sentence is fine as it is (apart from the missing apostrophe), you should keep "one's".