hard to replace.

I’m glad you phrased it as “hard to replace” because everyone is replaceable, and that’s something that some in IT don’t realize until its too late.

become extremely valuable

This is also good. Most in IT think this means “be the best at the technology” but really it means “be able to interface with non-IT about IT, up to and including leadership”. Soft skills are most IT folks’ Achilles Heel.