Your love for God will make you experience His companionship in everything you do. Where there is love there is never a moment of loneliness.
Thus you will be able to move forward with courage in all the challenges that life brings.
Think of one situation where you have found yourself failing. Now think that God is with you to help you in this situation. When you believe this, you will find that you'll get the courage to accept and face the situation. Then you can also work and bring about a change in the situation.