We all carry invisible weights with us wherever we go. I say invisible because they aren't physical, but more psychological loads, ones we can put down when fatigue sets in physically. But the psychological loads can be taken with us wherever we go because you can't physically put them down.
Tomorrow will be Monday, a new week begins. On Monday morning someone says something rude to you. Three days later you are still going over that comment repeatedly in your head and thinking back over it to replay it in your mind changing how you would respond, all the while feeling the same anger you did when it happened. But at that time, the rude person has long forgotten about it.
Then you have that thing you said 3 years ago that nobody remembers, except you, and randomly at some point during the day, it will come back and you will relive it as if it were happening at that exact moment again, as if you can not get rid of the tension in your body from when that comment happened.
What is the most interesting to me is how we try to protect those thoughts from leaving our mind, we hold on to those thoughts, rolling them over and over in our minds, as if we are looking for something that is not there. Thinking that if we could just analyse them one more time, they would weigh less. That will or may never occur.
But regardless of that, we continue to hold onto them and we continually give attention to them, so they have become as large a part of us that we have little room for anything else.
After pondering over this experience, I think the weight of the thought is not the thought itself, but the act of holding onto the thought, refusing to allow the thought to move through you, relieve itself and leave.