Bjornen, you're one of those people who lists their faults but still comes across as such a nice person; I'm left thinking... let me read that again... where's the problem?

I don't mean to make light of your suffering. Only to say, don't think you're not good enough as you are. Because you are.

I have a very soft voice, so I understand about people trying to drown you out. I agree that becoming loud is not the answer.

It's rude to cut you off when you're making a point. If it were me, I'd get into the habit of saying, 'Yeah. To go back to the point I was making.'

Do it flatly, with as little emotion as possible. If they interrupt again, do it again.

Eventually, even a numbskull should get the message.