One of the tropes of broadcast sports is the partnership of the guy describing what's happening on the field (an artifact from radio) and the guy doing color commentary, riffing on the why of what happened and predicting what might happen next (heavy on the cliches).
Most of us have both of those voices in our head.
If your play by play announcer is doing a poor job of accurately describing the world as it is, it's worth taking a hard look at how often that's happening and whether it's pushing you to make poor decisions.
The color commentary is a bigger issue: Is the constant whining/bragging/doom and gloom or blaming the voice does helping you do better work? It's suprising to me that you can watch a successful person at work and not realize that her inner voice is congratulating her all day (or cutting her down). That voice likes to take credit for being accurate and important, but it rarely is.
If the voice isn't affecting your work, then it's a waste of time, a distraction, and worthy of extinguishing. On the other hand, if it's helping you do better, bring it on.