If you’ve never seen this video, watch the first 11 minutes of this speech given at Harvard University. JK Rowling hits it out of the ballpark, talking how the epic failure in her life led her to put all her energy into the only work that mattered to her. Harry Potter was the result.
I listen to this speech when I need a good boost and to remind me that leaving real estate to concentrate on my writing was a blessing in disguise.