I see no issue with acknowledging good or positive things, but perhaps you should clarify what you mean when you say you should "focus" on them. To me, to "focus" on something means you invest a significant amount of time and brain power into understanding and evaluating them. If something is good and isn't broken, why, as a problem solver, would you spend valuable time going "oh isn't that nice?" when you could be addressing other problems?
Obviously there are things to be learned from the things that aren't broken (so that you know the difference between what works and what doesn't, and a potential solution when you come across something that IS broken), I just don't see the point of focusing on the good. It's good. Yay. Now move on.
I also find it interesting that both you and OP associate negative outlooks with big egos. You both mention how negative people tend to think of themselves as better or more deserving. I wonder if this is an association that really holds water.
Obviously there are things to be learned from the things that aren't broken (so that you know the difference between what works and what doesn't, and a potential solution when you come across something that IS broken), I just don't see the point of focusing on the good. It's good. Yay. Now move on.
I also find it interesting that both you and OP associate negative outlooks with big egos. You both mention how negative people tend to think of themselves as better or more deserving. I wonder if this is an association that really holds water.