Pain痛苦rnFirst of all,I want to add two definitions.First,there is no way to avoid pain.Second,pain is unpredictable.For our lives,even for the pessimists,presumably half of the time is spent in pain.Pain is everywhere and all the time.Some can be known in advance,some catch us unprepared,some are physical while some are spiritual.Pain is different for different age groups,but one thing is for sure,the older one is,the more serious painful things are.We may feel painful for a candy when we were a kid,while we feel painful for not being able to afford an apartment for marriage when we grow up.