Look back at your own life and see, you have had many incidences where you were anxious of how you would be able to overcome a particular situation, and you were able to cross them all quite successfully. If you look at your past, every incident has made you strong. The bad incidents have somewhere contributed to your inner strength. And the good incidences have given you more confidence in your ability and in your creativity.
So we simply have to make use of situations, good or bad for our growth, and I tell you, it is for our growth.