Here are my two cents:
Success springs from: Organization; goal-setting; leadership; the ability to foster intrinsic motivation in your athletes; willingness to to fight for your athletes; sacrifice; steadfastness for what you believe in, but not hubris that your way is always right; perspective; and I think most importantly, *passion*! (I sound like a Marines commercial!)
I also think that being a great athlete has little to no bearing on how good of a coach you are. The head coach at my HS track program ask prospective coaches three questions. (I'm paraphrasing here, it's been a while since I was asked these questions!) "In order of importance, How do you describe you relationship with kids? How do you describe you relationship with other coaches o staff? What do you know about track?" I agree with him that "content" can be taught, through a variety of methods, but the ability to connect with kids and work with other coaches is the most key to being a successful coach.
As for measuring success, you could say number of state titles, number of kids who try out for your program, number of athletes competing at the next level, etc. However, I measure my success by the long term relationships I have with my athletes. If I see kids coming back, years after they have graduated, and they have been positively affected by my coaching, in whatever way, then I consider my coaching successful. They could be running track, or building computers, doesn't matter, but if they can look back on the time they spent with me, and feel good about it, then that is worth way more to me than any first place finishes.
SEP
P.S.
We got three inches on snow last night in Denver, think am going to break out the rock skis and hit the golf course! I figure I got a little time before everyone in the house wakes up!