I have occasionally been accused of “thinking too much”. Shocking, I know.
But being accused of that made me think about the concept of “thinking too much”.
(Some might present that as evidence for the prosecution, but hear me out.)
I propose that there is one simple litmus test for the level of thought that you are giving to any particular subject:
“Does your thought appear to be unnecessarily reducing your action?”
Generally, “giving some thought” to an action you are about to take will improve the action taken, I think we can all agree on that. Whether it reduces the cost of the action taken by making it more efficient, makes it more effective toward a desired outcome or highlights some errors with the planned action, the thought has been worthwhile, as without it you would have achieved less of value.
However, it would make sense that there is a point where thinking has simply become redundant or even counter-productive. A sort of “distress thinking” point, if you will.
I would suspect that this point is not where you can no longer find new thought on a topic, but perhaps where it becomes a significant effort to find new angles. Perhaps where thought slows and logical links become more strained? Perhaps even where you simply feel that continuing to ponder a topic is “just not worth it”.