I really think the nicest and most genuine people are often the ones who have suffered or struggled in life, but have somehow managed to hold on to their kindness. I don't know what it is, but I can always tell when I meet someone like that. I've met them in the hospital, in group therapies, at my previous jobs, and on this forum. I don't always remember them personally, but their kindness stays, and I'll always remember that kindness.
I really struggle with negativity when it comes to society and the world, but all it takes is for me to remember that I walk or walked the same earth as those kind people, and all is good.