I have this sentence:
I completely believe that teenager working is the foundation step for any child to rely on him or her self.
Is this correct? Should I instead say “himself or herself”?
I have this sentence:
I completely believe that teenager working is the foundation step for any child to rely on him or her self.
Is this correct? Should I instead say “himself or herself”?
This is an ongoing awkwardness in the English language. It still sounds awkward to many of us to use the third person plural to mean a third person masculine-or-feminine singular. However, I think it will eventually be adopted, simply because saying "him or her", "he or she", "him- or herself" (I prefer to use the hyphen) is even more awkward.
Note that in the original sentence "him or her self" is incorrect (hard to notice because the line break occurs there). Herself is one word.
Him or herself is acceptable (without the space between her and self), as is himself or herself, as discussed in this very in-depth discussion of the topic from the English Language and Usage Stack Exchange site.
As Cerberus said on that page,
Although, indeed, him(-) or herself looks like illegitimately cutting up a word, this is how I think most people would say it in speech. Speech is normally leading in such cases, unless this gives you clearly unacceptable results.
Also, as noted in the comments, there are several other problems with the sentence as constructed, but the use of him or herself is fine.