Is a reasonable amount of stress good for us?

We only evolve as biological systems and as organisms because we sort of expose ourselves to stress: stress that is sort of dangerous enough that it breaks us and then makes us evolve, but not too hostile that it kills us. Right? Now, when it comes to work, you also have to break your level of knowledge to be able to grow and push yourselves and your boundaries. And only at that point, you'll realise whether this is the right thing for you.