You are fine one moment, and the next moment slaps you into sadness. Sometimes, you notice that change. And sometimes, you don't even notice when it hit you. That's what happens when we carry a burden of thoughts. We all live with a grave in our hearts, a grave that we have built for ourselves with the baggage of thoughts. We think, we think, and we think more until we have created a monster in our head. And then, we just keep feeding that monster to keep tormenting us. I know you too have done this. I know you too have suffered those mood swings that sometimes become too big to be called just mood swings. We run away from our problems. But in loneliness, we let out brain go into that dark zone of "what if ..." And from there, we just keep drowning deeper and deeper into the mess. We go from a simple problem to "I can't live anymore," within a few hours of overthinking. It's a serious issue. It affects your peace. It can lead you into depression. At the very least, it will make you sad, from time to time.
So what's the solution? Don't hide. Stop hiding from your problems and mistakes. Come out and embrace reality. Even if the truth hurts you, go and hug it. Take that slap. Feel that punch. But get real and get brave. Accept that you have made a mistake. Accept that you have failed. Accept that you have hurt someone. Accept that you have let yourself down. Accept that you could have done better. Accept that you were living in denial. The only way out of overthinking is to think about what scares you. And then, you need to face that scary monster. You can not live your whole life with this burden. You have to scream it out and challenge that I will handle whatever comes and whenever it comes. I will not hide. I will not shiver. I will not lie. I will gather all my courage and I will fight. I will fight because I deserve to be happy. I deserve to be free. I deserve to have no fear, no baggage in my heart. And I deserve my peace.