We with ADD or ADHD have problems with blurting out; for example, saying the wrong thing to the wrong person at the wrong time.
“Aside from that, Mrs. Lincoln, how did you like the play?”
Here’s some guidance on how to reduce that. It’s comfort in, dump out. We can make this a rule. It means that you give comfort to the person in need, and your own reactions you share with someone not involved.
For example, when listening to the wounded or struggling person, you avoid, “Oh, when that happened to me,—“, or “That really upsets me, I think I’m getting a headache, –” and so on.
a corollary :
A lot of people talk about avoiding the recently bereaved or upset, because “I don’t know what to say.”
We’re uncomfortable. But nothing you can say is going to help; it’s simply being there that helps, and listening, not talking.
“I’m sorry.” is plenty good enough, and it helps avoid blurting out something hurtful.