Insane thought - 01

Today I have this beautiful thought in my mind. That is, if a person knows for sure that he is gonna live for some couple of months what happens then? Often it was shown in tv series or movies that this kind of people do lots of daring and uncanny work because they have a little long breath to take. Is that true? Because I think movie/series exaggerates peoples lives more often and most importantly why would that person do some thing that is going to cause him a long death rather than a short and beautiful one. I have also seen people talking about death and they even try to beautify this horrible truth of life. I think those people are really timid. They are the most scared of death. Human has this strange instinct that they always want to win their fear by facing it. And I think in this case it happens here too. They talks and discuss about it hours and hours only to get rid of the fear that one day they have to leave.