Why the Confusion?
'You': Depending on its role in a sentence, 'you' can be:
Here, 'you' is the subject of the sentence.
Here, 'you' is the object of the sentence.
I'll be standing right next to
Here, 'you' is the object of the preposition.
Admit it Jake! It was
Here, 'you' is the predicative of the verb 'be'.
'Yourself' is the reflexive form of the singular 'you' and can only be used when the pronoun 'you' has already been used in the sentence once. If there are any other pronouns, except 'you', you’re not allowed to use 'yourself'. See the examples below:
Implied 'You' in Imperatives
'You' as an Emphatic Pronoun
Other than being a reflexive pronoun, 'yourself' can also be an emphatic pronoun. You can use it to put emphasis on the 'you' part.
Is 'Yourself' More Polite?
Sometimes people use 'yourself' instead of 'you' in order to sound polite or formal. But it is technically wrong. However, people do use it in spoken language.
We don't see many gentlemen nowadays, like