Events in recent years have impressed upon me the fragility of human life. I have lost friends, family, and associates. This happens with greater frequency as we get older, because most everyone we know is getting older too. However, I have also seen young people die from accidents. For example, a young couple I worked with were hiking in the mountains during a storm and were killed by lightning.
Cancer has claimed the lives of a few people I know.
What can we do about? I think that the first rule of living should be, "Don't do stupid stuff." Stupid stuff can get you killed. Don't take unnecessary risks. Obey the law. Don't do drugs. Drive defensively. Obey the speed limit. Keep your vehicle, especially your tires, properly maintained.
Keep fire extinguishers and working smoke detectors in your home. Get at least two carbon monoxide detectors, because if both alarms go off at the same time then you know it is not just a defective detector. This happened to me, but I also know a whole family that got carbon monoxide poisoning and had to be treated at the hospital.
I think that the second rule of living should be, "Take reasonable steps to protect your health." Don't smoke. Drink in moderation or not at all. Eat as healthy as you can. Consume more plant based foods and less red meat. Eat fewer processed foods and more fresh foods. Exercise.
By the way, there is much research to indicate that sugar is very bad for you and addictive. For this reason, I don't keep any sweets in my home, otherwise I know I would eat them.
This is all common sense, but humans in general have a tendency to ignore common sense. We think that nothing bad will happen to us, but I have seen bad things happen to too many people. There is potential disaster around every corner. This is the reality we live in.