You probably won’t be fortunate to never experience failure in your life.
However, you must understand that it is part of life. These are the times when failure fills your mind with doubt and it is hard to muster the confidence you built up earlier in the process. You can’t let go of your commitment, no matter how shaken you are by failure. In fact, any setback should only prompt you to double your resolve to make another attempt at reaching your goal. In order
for this to happen, train your mind to build your self-control and self-confidence. Every step towards self confidence helps get rid of doubt and you will be back to your successful ways once again.