Overthinking and a reaction of this nature is seen as a byproduct of both generalized anxiety disorders and depression. It's also no surprise that people who have already received a diagnosis for these conditions tend to report higher rates of anticipatory anxiety compared to the general population. So why do our brains do this? Why do we find ourselves spiraling and worrying often when we don't even want to? When we know it's illogical and it won't help this situation anyway, we can't predict the future. Our anxiety likes to convince us that we can.