Whilst I used to commonly calm my ire or worry with the aphorism "In a hundred years who'll care?", these days, since the death of my wife, I don't have to work very hard about not being ruffled by life's bumps. For those who don't have that advantage, this set of time lines might just help you put a lid on things.
http://www.waitbutwhy.com/2013/08/putting-time-in-perspective.html?m=1
http://www.waitbutwhy.com/2013/08/putting-time-in-perspective.html?m=1