I (rarely) do it too. What I realized is in most cases (if not all) it's all about spitting it out whatever is in my mind without any intention to listen to what others are trying to say and without thinking that I can learn so much from others.

Writing it down won't get you too far, imho. Because you probably still will be in rush just to read what you noted down and eventually miss the chance to learn from others. It's all about listening first.

There was a thread here on HN recently, titled "People with Greater Intellectual Humility Have Superior General Knowledge".[0] I think it's pretty relevant here in this topic. Intellectual humility goes a long way I'd say :-)

[0]https://news.ycombinator.com/item?id=20124447

I wear a rubber band on my wrist and lightly snap it when someone is telling me something and I feel compelled to interrupt. It brings me out of the moment just enough to wait. But, you have to remember that the rubber band exists :-)

Try keeping a stopwatch in your head (think speed chess).

Start it when you start talking, and periodically make it a habit to check ("How long has it been since someone else talked?").

If it's been too long, wrap up your thoughts and pause a while before launching into the next bit.

It's usually obliviousness ("I didn't notice anyone else", in my personal experience), but it can feel very rude to others ("I didn't want to listen to anyone else").

All part of soft skills. We all get better together.

Instead of writing down your thoughts write down the names of people you cut off, then track them down and apologize.

Apology speaks directly to your impulsive mind, a kind of self-inflicted peer pressure mechanism.