HN, how are you measuring your own personal growth? How do you KNOW you're better today at X, than you were a year ago? What metrics do you track? What system do you have in place to do the tracking?<p>This question was inspired by Jessica Livingston's "How Not to Fail" speech (http://themacro.com/articles/2016/06/how-not-to-fail/), point #4.