That's excellent, I too want my kids to know that they can do or accomplish anything with sufficient preparation. I try to work into their vocabulary (as well a

That's excellent, I too want my kids to know that they can do or accomplish anything with sufficient preparation. I try to work into their vocabulary (as well as my own) to say/think "Wow that person has trained a lot" when seeing feats of skill. When they themselves accomplish something I try to say "seems you have trained a lot!" rather than "nice drawing" or whatever. Another hack I've applied in the way I talk with my kids is to sometimes say things that are obviously wrong. Starting with very obvious errors and as they grow older moving to more subtle lies about the way things work. If they don't catch the error I continue reasoning along the same line far enough into absurdity for them to get that I'm wrong. It makes them aware of questioning what people say and to think through themselves what is reasonable and what is not. And they now are very proud and happy whenever they are able to point out when I'm wrong about things. I also never, ever proxy them towards other adults. If we are eating at a café and they want a napkin or buy another pancake they have to talk to the staff themselves. When they want ice cream I give them money and they have to buy it themselves. Because it is such an asset to be comfortable talking to people and getting what you want. It makes them believe in their own abilities.