What I thought I Could not Do

This is the last of the memoirs. As you can see by the title I am wondering about a time that you accomplished something that you believed you could not. Every day we are faced with challenges. For some people even getting out of bed in the morning is a challenge. I would like you to think of a task or something that you really didn't feel you were capable of doing. What was it? Why was it a particular challenge for you? How did you complete this challenge? It doesn't have to be monumental. At times just putting one foot in front of the other is challenge enough.  I look forward to your responses.