For the record I appreciated your comment but can't reply there. It shows a willingness to consider a position. I'm guessing you're probably young, and young people have a torrent of "the end of the world is nigh" thrown at them these days. It's tough to see above this and think optimistically. But the key to a calm mind is to think optimistically, tempered with rational 'what if' thinking, so if bad events do come to pass, it's not earth shattering.