Your mother taught you a beautiful thing. I learned how to control my ADHD at an old age of 53 through 60. I discovered that I can accomplish more in much less time than my peers. And, more importantly, be happier.
You got your whole life ahead of you. Take what your mother taught you and run with it.
I can see nothing wrong with pouring out your tears privately in your room - as long as you do not over due isolating yourself. Pull Teddy out of moth balls. Talk to Brunno. He understands. "Brunno" sounds more like a pit bull than a Teddy Bear. But -- If "Brunno" works for you, rock and roll.