Completely agree with your suggestion for handling this issue. This is something I’ve experienced most of my life as well and have only started realizing it at work the past few years. As I started working on more complicated subjects with a lot of room for ambiguity and error, I really have to make sure and qualify what I know for certain and what is more speculation in my work conversations.
(Well, I must say, you mentioned you’re not a native English speaker, but you could fool anyone because your English is crazy good - what is your native language?)
I agree, it’s a real strength and something you can learn to control and use when you need it. It has definitely led to burnout situations for me in the past. For me, I think that comes from wanting to meet the expectations I feel I’ve set, but I’ve struggled to differentiate between expectations that I’m setting for myself vs. what others actually expect. My entire life I’ve worked harder than needed, most likely. Does this sound familiar to you? It’s definitely led to some success for me that I don’t feel is really deserved, but I’m learning to be a little more grateful for it these days :)