I suffer from this too. I try to keep to myself and act normally but it doesn't always work. It's easy to lose this restraint, especially when conversation turns to topics I enjoy. I end up saying way too much to people who are likely not interested, realizing it immediately afterwards and feeling regret. I learned to recognize some social cues so I can try and stop myself before it does too much damage. I also learned to talk about topics others enjoy instead.

This is a sign of ADHD, which I have also been diagnosed with. It shows up on the diagnostic criteria and adult self-report:

> How often do you find yourself talking too much when you are in social situations?

> When you’re in a conversation, how often do you find yourself finishing the sentences of the people you are talking to, before they can finish them themselves?

> How often do you interrupt others when they are busy?