How I measure success...today

So, in the interest of semi full disclosure..... I am over weight.  I am the heaviest I've ever been, and I don't really like it.  So, to do something about it, my best friend and I decided we were going to download an app called C25K (couch to 5K).  Basically, if you have never run before in your life, you do interval training (alternating running and walking) and at the end of 6 weeks, you will be able to run a 5K.  The first couple of times I did it, I wanted to die.  Literally.  Yesterday, it got easier, and I ran faster then I have before.  Today, I measured my success by the fact that sweat was pouring down my face into my eyes.  That has never happened to me before, and it felt kinda good!