In the song you're so vain carly simons says: You gonna is not unheard of but it's pretty sloppy. For the usage you are, you're gonna is more common.
That said, the mind is an abstract thing and can mean different things in different contexts and can be described in. I got a text from a us native saying: Otherwise, we say something is in my mind to denote that we have remembered something but it is not at the forefront of our thoughts.
Your (royal) highness is for princes, princesses, their spouses, etc. This sentence uses present continuous tense. The more casual the situation, the more you gonna hear you gonna. note also that these two words, you and you're sound similar. Your majesty is for the king and queen;
The same thing applies to i'm, he's, she's, we're, and they're, among other contractions. It's just colloquial english, that's all. It represents an action that is happening now and might continue in the near future. I don't really understand the rubber and glue reference in the idiom:
`hope everything is going swell' i had never heard that before. Where is better to use swell instead of well? Either you're or you are can be used; Your grace is for dukes and duchesses;
But then again, it depends on where you are using it. You walked into the party like you were walking on a yacht your hat strategically dipped below one eye your scarf, it was apricot you had o. Note that in some situations, like ebonics, you gonna is considered perfectly natural if not grammatical. We can schedule a call when you are free or we can schedule a call whenever you are free what's the difference?
And i hope you keep doing well are they essentially the same thing? Since as we all know glue does stick on rubber. They're definitely different in that you use them for different people! Is it better to say in a professional email:
Whatever you say bounces off me and sticks to you. As i mentioned in my comment, the usage depends in reference to the context of where it is used.