Instead of asking why did this happen? Telling yourself to stop thinking about something can backfire. Instead of worrying so much about what your partner really is or isn't thinking about you or the relationship, fall back in love with yourself.
Sometimes, they conjure up images too. If it becomes something that provokes chronic anxiety, then it might be considered some form of mental disorder.
Often, he says, obsession happens with people who have the tendency to be, well, a little neurotic. That being said, this does not mean that the thoughts are not harmful.
But, overthinking can be associated with and diagnosed as anxiety. Take infidelity for example. You might want to consider looking into these to see if you like their approaches.
Like Cady Heron in Mean Girls , I could hear people getting bored of me, but I couldn't stop — it just kept coming up like word vomit. It is not a mental disorder but its not good in excess. Rumination does involve this type of over-thinking, but it's tied to mulling over the same thing repeatedly.
A few years ago I was interviewing a psychologist for a piece I was writing about introversion, when he mentioned a term that I had never come across: Gerber 18. In such a case, by over thinking, you are only creating problems that aren't there.
I've been known to analyze nutrition labels and ingredients lists in an attempt to decide if the item in question is something I should buy; then, I'll analyze the fact that I'm analyzing the label.
Also, many people describe anxiety and also panic as feeling like they're losing their mind or going crazy -- or turning into a lunatic.
As an alternative thought, maybe you also consider the best case scenario, where your boss understands your mistake and helps you work through it instead of firing you.
Know that it's a process, often a slow one, but progressive nonetheless. We have the ability to think, create decision and make judgment due to the information that our brain is receiving from our senses, Overthinking is normal, you are not the only one who is experiencing that but overthinking without any reasonable reason is another story.
However, it is often associated with mental disorders such as depression and anxiety. Anxiety makes us overthink everything in many different ways, and the result of this overthinking isn't helpful at all.