As someone who has trained many Finns over the years, a lot of the problem people have with confidence is that they think they need to know more. That is not the case. There are a lot of very competent unconfident people. There are also a lot of incompetent confident people. I am more incompetent unconfident.
One thing going for Finns though, is Finns are pretty direct and the "don't talk much" walks as a negotiating tool.
On a side note, a million years ago I was randomly at a bar with Kimi.
"I am more incompetent unconfident." Oh come on, you need to coach yourself out of that believe 🙂↔️ It's always an amazing bragging point if you have been in a same bar as Kimi