"The cure to unhappiness and all the depression in the modern society is simply to SHARE. It does not matter where you are from, you need other human beings." I think that is the best thing we can do. No one knows what is coming in the next minute, or day or after we die. The only thing we can do is try to make things a little better for those around us.

"I'm faced with the reality that I might lose them someday" I have been dealing with a similar issue. I am in my 30's and I am the youngest member of my family. One close relative in particular, is currently looking like he won't see next year, sadly. It isn't sudden or shocking, as it was in your case, but it still hurts to see it happening.

I hope you are holding up well.