Setback are due to new approach. Plans are sometime executed itself without any specific efforts, sometimes even dedicated efforts misleads. Result is how a person reacts, it has taken as setback or Failure.
Reason : Optimistic or Pessimistic.
Never thinks anything as failure, whenever you find yourself beyond track just enhance the limits of your plans then only which efforts were becoming failures will convert to setback of that approach as you have make broader definition of your efforts.
In such way meaning of your efforts will always have some value.

