Overthinkers are those that spend soo much time trying to make a decision or those that think and read too much meaning into every detail. I am not saying we shouldn't think things through, we should. In fact the idea is to pick a decision look at the pros and cons then settle on it. Rather than saying it's black today, without facts tomm you say it's white and then you end up confusing yourself.
Overthinkers tend to make bad decisions. When you are about to make a decision, especially important ones don't tend to confuse yourself.
The first thing to do is go with the first decision that comes to mind. If you're stuck between two answers, you will get soo confused that other people might end up making decisions for you.
You know what the Christians call Faith, going with that decision, believing it's the right one. I used to be an overthinker, till I realized I was confusing myself the more. Make a decision and stick with it.