Tanya Chapter 37 part 2

The more energy we invest in a speech-mitzvah, the more of the animal soul ascends to holiness. When the animal soul is absorbed in holiness, forgetfulness is alleviated and our Torah study is preserved. In our ambitions to elevate the entirety of this world, our mitzvah makes a huge impact. Because it is not just the things we use or the powers we invest, but everything that supports the process all the way back. Indeed, it takes the world –– and thus elevates the world.