'Sticky thinking' hampers decisions in depression

I’m a bit confused on what sticky thinking is.

Is it daydreaming about negative future outcomes based on a decision? (If I do this and it doesn’t work, everyone will laugh at me / partner will leave me)

Or is it hyper focus on past bad decisions (I missed out on this / did it wrong and that’s why everyone else is so far ahead. Now I am scared to make same decision again)

Either. The main issue is there are so many things in your life outside of your control that trying to use your brain to put a path through decisions based on what might happen in the future or what could have happed in the past will put you in an infinite loop. In my own experience, I've accepted that my brain is really great at taking in inputs and processing them in the background. I rarely need to actually "think" about things.