I was told a long time ago not to worry about the little stuff, and realize in life most things really are not that big at all.
I know what you mean now and for the most part others that are not going to affect you or your loved ones are not worth giving a rat's ass about. Do stay committed to taking care of your self. Especially your health, a healthy lifestyle ect...
It may not be popular but I think it is ok not to wish harm upon or celebrate in others misfortune but still not care one way or another about it too.