What things have u ever done to express ur love and grateful to someone u really care about?

I saw a video this morning,which is about the last few times of persons' life in a plane-wreck in 1985,the plane exploded after 12 minutes flying,and there 30 mintues between exploded and crashed in the mountain,I saw the endless scary and the hopeless of those people's eyes.

 

After searching,the papers with message their left at the last of their life are what rescue worker could only found.

 

Those messages are not long,but those directly words just like a blade which stick into ur deep heart,they expressed their deeply love for their wife,kids,mother and so on,i was totally shocked,i have bo idea what to say,what if that was my last time to express my feelings what i'm not show to my family?