I believe in positive thinking and intentional living. I also believe in truth-in-training, which carries over to truth-in-living. We have to be prepared for anything, and we can't deny the worst if we are staring it down. We of course should never give up, and should fight the good fight if we have to. We should stand with, hold, honor, and support those who are facing these challenges. On the other hand, if we are healthy, still functioning, living another day, we should celebrate that every day that we get.
There is no guarantee that living a healthy life will protect us from the poisonous world or mysterious and rare genetic illnesses. But it certainly helps with the quality of life. Likewise, healing our planet and reversing negative trends may be a long-shot, but we should take it anyway. Further, one may not believe in the efficacy of prayer, but it has a place in the process and it doesn't hurt. If life is more journey than destination, these things still matter.
A crucial part, maybe the crucial part, of intentional living is conquering fear. For it is fear itself, not the object of fear, that is to be conquered. This, like all things, is done in the moment. Fear resides in the future. Breath resides in the moment, as does peace and life. Find the relationship between them and abide there. Smile. Be nice. I'm not sure we can do much else.