I train for the Olympics each day so that my dream doesn't become someone else's. Option B is the correct option.
Compound indefinite pronoun : The indefinite pronouns -body, -one, -thing, are often combined with qualifiers to make the compound forms. All of these pronouns require the use of a singular verb. Although everyone, everybody, and everything could be translated as each one, or each thing, and therefore singular, they are commonly thought of as plural, which is wrong.
