Overthinking is excessive thinking. But is't good? Or bad? It's obvious that it is bad by just the word itself. We all know that too much is bad whatever may it is.
Overthinking is like a curse. It's hard to stop overthinking if youvalready practicing it for years. If you are:
repeating all the embarassing things happended to you, spend time worrying things about uncontrollable things, you find it difficult to move on after a mistake and you use your time finding hidden meaning about things and you are making simple things complicated,
Then maybe you are overthinker.
For me, we need to overcome it. Overthinking may lead hurting ourselves. A while ago you are happy but suddenly you overthink and it turned the table.
Be happy and prevent overthinking. It will help your mental health.