You have confused your and you're. You must, as I do, regard this as a serious spelling error. Your . . . you know what your means. You're is the contraction of "you are". So your and you're sound the same but have totally different meanings. Mix them up and you make a goose of yourself. Journalists simply aren't allowed to mix up your and you're. Make this silly error and you'll look unprofessional.

The test takes one second. Whenever you write "you're", stop and say "you are" in your head. If the sentence still makes sense, you have the right word. "You're late" becomes "you are late", which works, so the apostrophe stays. "Your coat" becomes "you are coat", which is gibberish, so it must be the other "your". Do that little swap every single time until it becomes automatic.

It is worth getting the whole family straight, because the same trap catches "its and it's", "their, there and they're", and "whose and who's". In every case the version with the apostrophe is a short way of writing two words: you're is you are, it's is it is, they're is they are, who's is who is. The version without the apostrophe shows belonging: your coat, its tail, their house, whose turn.

Why am I so fierce about an apostrophe? Because this is the kind of mistake that ends up in a headline, in letters two inches high, where the whole city can see it. Editors have lost sleep over less. Master the one-second swap and you will never be the one who put "your" welcome on the front page.