"what can we actually do with that truth? How does it enable us?"

If truth is the lack of untruths, and untruths harm us by confusing us, misdirecting us, misleading us, resulting in mistakes, and so on, then truth enables us by not doing all those things. If what we know is true, we're unencumbered by falsehoods, lies, and errors that lead us to false conclusions, and worse outcomes.

Information is power, and power is good. Incorrect information is the opposite.

Now that I explained it, I'm not sure if that's what you were asking. Seems a bit too obvious.