Perhaps I become more pessimistic as I grow older? let everything goes with the flow ? and believing in faith too much? these are all question marks to me too.
However, I am pretty sure that I am less to tolerant to people who constantly moaning about their life.
The world isn't going to change because you are unhappy, unsatisfied, not contended, unfortunate and etc. Pull yourself together and keep on going.
No matter how bad or how good it is, it will come to an end.
What matter is how one deals with it when it occurs.