if i have noticed

In my opinion the problems never really go - you just forget about them, or realise that it was never a problem - if it isn't a problem now, it was ever a problem.

To me problems are there to keep us alive, and as pointed out in the first response, if it comes one after another with reasonable gap, it is just fine. But if problems appear all at a time then we are bound to be clueless. Otherwise, problems are like breeze, sometimes stormy and sometimes gentle, they are always around you to add spices to otherwise monotonous life.

Its like when 5 serious ones hit you all at once, then worry. Otherwise just deal with it.