There are times when we tend to think about others, in pretty much the same way as we do. Thus, if i'm a hard-core critic, a friend of mine has to be a critic as well. My guess.
It takes some amount of effort to come out of this mindset. I'd, rather, not think like this. It's something not pleasant. Nor fancy enough.
I've begun to like broad-mindedness. It's nice to be so. We are able to understand our varying environment, much better this way. Than to conform ourselves to some non-rational ideas. This also helps us enjoy every moment. Imagine, if we, time and again, brood on something that is not to our liking, we miss out on the fun that other's are taking part in.
On the other hand, i guess, that this sort of brooding enhances in us clearing knots. Yes, but, i do mean, musing over it. All the time. At the same time, we ought to halt it, in definate terms.