I couldn't agree with you more @ak2020. Just the other day, I was telling a friend that as humans, it's very normal for us to get sad and worried when we encounter terrible situations. But the best of us are those that are able to quickly recover from this state of sorrow and get on with their lives. For me, if you can change something, then by all means, do. But if you can't, then there's no point worrying about it. It's that simple.