One situation I encounter time and again is people who have great insight but cannot communicate it forward as they haven’t learned to give a presentation. Don’t get me wrong, I’m not saying I’m an expert nor that it is easy to do. However, the ability to give presentations is an absolutely fundamental skill regardless of your profession, and is something that I feel is not stressed enough in Finnish education (I remember one of my teachers in Belgium used to complain about that after having seen many Finnish exchange students), to the detriment of business here (I am yet to count how many times I’ve heard that “We have great ideas but don’t know how to sell them“).
I haven’t tried them (most of what I know about speaking in public I learned in Models United Nations as a teenager), but I understand a good way to improve in this area is to try Toastmasters. They even have a Helsinki chapter.