These centenarians have lived through more than we could ever imagine: Wars, moon landings, and more. But what were they sad about? For these individuals, very little! Yes, they had difficulties like marital problems and deaths in their families. But in their words, life goes on and they get through the issues. They worked through any problems instead of taking an easy way out. Their advice? Study, communicate, be kind, spend time with family, and hold on to those you fall in love with.