Hey @trezx
It's lovely to have you here! Opening about those "memory trips" can feel like a lot, especially when they seem to come out of nowhere from just a small comment. It's a very common experience, but that doesn't make it any less frustrating when you feel like you're tripping over yourself to explain it 💚
Often, when an innocuous comment sends us into a tailspin, it's because it has hit an old bruise we didn't realise was still tender. Instead of viewing your reaction as an "overreaction," it can be helpful to see it as a signal. Your mind is trying to protect you or process something that didn't get fully settled in the past.
You don't always have to explain the entire history in the heat of the moment. But if a comment did spark a reaction, you might try saying something like "That comment actually brought up a bit of a heavy memory for me. I'm feeling a little overwhelmed right now, so can we circle back to this later when I've cleared my head?" Or you could say, "I'm reacting a bit strongly because that reminded me of a past situation. It's not about what you just said, but my brain is making a connection to something from my past."
Avoiding those lines of thought entirely is difficult because our brains are designed to make associations. Rather than trying to stop the thought, you might try grounding. When a comment sends you back in time, try to notice three things you can see in the space around you to bring yourself back into the present moment; it can work, but it also takes a little bit of practice and getting used to.
There isn't really a right or wrong amount of detail, but I think a good rule of thumb is to share in layers. You can start with the "what" (e.g. "I have some history with that topic") before moving into the "why" once you feel safe and steady with the person 💚