To Think Kills You

I don't know whether you have paid attention, but when we are in company of other people and have conversation about environmental problems, more than one say: I don't want to think about that because I become ill.... In nothern parts of Europe it is an idiom: to think kills you. I don't agree with that, rather I would say: if you don't think, you are dead. Do you know any problem resolving itself? It is, you have a problem but you don't want to know anything about it.... I think it would become worse...

In conclusion, I think the best idiom would be: think globally, do it locally.

Have a nice day.