One of her favorite sayings is, “You should always try to be the best that you can be.”

Is the above sentence written and punctuated correctly? ^

Thanks!

:]

Yes. It's absolutely correct. :-)

Thank you!

:]

Yes, the above sentence is written and punctuated correctly. It is a complete sentence with subject ("One of her favorite sayings") and predicate ("is"). The quotation is correctly enclosed within quotation marks, and the period is placed inside the closing quotation mark. The sentence also ends with the correct punctuation mark, a period.