This quote from Worf (ST:TNG). Admittedly I’m still working at it and by no means perfect, but it does help when thoughts like this from the past arise:

“Thinking about what you can’t control only wastes energy, and creates its own enemy.” - Lt. Worf

It’s simplistic and sounds easier than it is given such complicated topics. But on the surface, it does help me to remember why it’s ultimately not in my best interest to think about destructive/negative things.

Can you give an example? Sounds interesting.