writing question - is this sentence correct?

Hi, is this sentence grammatically correct and understandable?

Stop- I was not going to follow science or math; it was a career without future. Especially in Peruvian society, where happiness can only be achieved though a process of social status escalation.

thank you for your time!

Good evening :)

"Stop- I was not going to follow science or math; either would mean a career without a future. Especially in Peruvian society, where happiness can only be achieved though a process of social status escalation."

You're welcome.

Regards,
Gloria
Moderator, EssayForum.com

Which sentence is correct?

This is the end, period.

Or

This is the end. Period.

I think that sentences will like that This is end period without dot

But why do I see some composition in favor of the latter?

These are both unconventional ways of writing. By "unconventional," I mean that they do not strictly follow the rules. When someone uses the word "period" this way, it is a colloquialism. It is a creative way of expressing that something is absolutely a certain way. No more discussion is allowed. It will be this way. Period.

Yet, when I put "period" by itself like that, it is an incomplete sentence. So, it does not follow the rules of grammar. But it is okay! It is a creative use of English.

Will you please write a whole paragraph that ends this way so that I can be sure I understand what you mean?