Welcome by the way.

Could it be that you are missing something in your life and that it translates to the behaviour you worry over? I too suggest that your intelligence leads you to ruminate over this a great deal and perhaps more so that others might. Are you maybe then thinking too much? Thinking catastrophically? Spending a great deal of time on conjecture?

I will go from zero to 100 myself, over think, and come to more negative conclusions.

While not everyone will agree with me, I find your behaviour more normal than worrisome. It is the frequecy or dependence on these things that could be problematic. Again, I am reading however that you are searching for something missing and that this may be how that struggle is manifesting itself.

So how to find that missing puzzle piece? My own thoughts are to try and broaden your exoeriences. For example, I discovered art and kayaking to be hits and I do so when I can.