defining moments

we sometimes are in a real dilemma that what should we do in case of defining moments.
for instance there is a situation where we have to choose between a family function or an official meeting, should we attend the best friends wedding or go for an official visit.
in my short life so far i have been in a dilemma so many times , i remember a day when 2 of my closest buddies went for the same interview and one of them got selected , there was a freind who had tears and was sitting in a state of shock and rejection and the other one was on top of the world and was just enjoying the moment and both of them were in mfront of my eyes, it was so difficult to choose , whom to go first?

i know there are gonna be many more instances like this in my latter part of the life and i dont know what will i do then ................
till then ..................