Coming from a mainly C++ background, I find that the Rust language makes best practices in languages with manual memory management (and to some degree also in garbage collected environments) explicit. This is a great property of the language and it definitely changed the my C++ programming. You can see it as automatization of the more boring aspects of code reviews.
I am from a more mixed background, but I have had my fair share of C++ before I learned Rust.
Now when I code C++ my Rust knowledge is a double edged sword. On one hand, I have a much better idea on how to manage my data in C++. I had this discipline before learning Rust, but I didn't have explicit rules to it; it was just a ... nebulous bunch of idea about how data works. Now it's explicit. On the other hand, I am absolutely terrified when writing C++ code (something I would do with ease in the past). Well, not exactly, but it's hard to accept somewhat-unsafe code (which is probably safe at a macro level -- i.e. safe when looked at in the context of its use) and while I can see that something is safe, I can also see how it could become unsafe. And I fret about it. Rust trains you to fret about it (more than you would in C++, that is), and simultaneously Rust handles it for you so you don't have to fret about it :) C++ doesn't handle it, but you still fret about it sicne Rust taught you to.
I guess it's a "Living is easy with eyes closed" thing :P
