A smile even if it's a fake one is the best reaction you can give to the problems life throws in front of you..don't let problems deter or depress you...stay optimistic and fight it out...think of it as like this...'so,for many days i was going through a good phase...now i'm just going through a bad time...no problem..i just need to stay patient and work out a solution..no need to panic or get sad...it will be over soon and life will be bright again.'