That one thing
Do you want to be valued? Develop one skill that you can be best at.
There are plenty of jack-of-all-trades in organizations. That's okay. Sometimes you need people that can do a little bit of everything. However, if you want to be valued and get paid what you are worth, not only within an organization but even beyond that, then develop one skill that you can be best in the world at.
I didn't say you have to be the best in the world at this one skill, but rather, something you COULD be best in the world at. Then work to develop that skill.
It needs to be something you feel like you are already naturally good at and something you are passionate about. When those three buckets align, you will finally get paid exactly what you are worth.