You gain strength, courage and confidence by every experience in which you really stop to look fear in the face. You are able to say to yourself, 'I have lived through this horror. I can take the next thing that comes along.' You must do the thing you think you cannot do.

This quote is saying that when we face something that we are afraid of, it will give us strength and courage to continue to face future challenges. As we gain confidence from these experiences we learn that even if we may be afraid of something, we can still overcome it. This quote also encourages us to take on tasks, even if we don’t feel capable of completing them, as it may just turn out to be the experience that gives us that confidence to take on more difficult challenges.