I consider myself very balanced but this balance involves avoiding certain extremes. Emotional extremes. There are some realms of imagination that concern pain and suffering that'd cause me cringe with empathy and bring me to tears and help or possibly run away screaming in panic and fear - if I'd see them. Even imagining such is difficult and possible only in abstract terms lest it actually cause such reaction in me. Or else I'd become dull to it (which is a protection mechanism). Sure dealing with such horrors can be trained. Otherwise people couldn't stand horror movies which forces to separate the real from the imagined. But then I don't see any need to train this (and risk loosing my empathy even slightly).