In my own opinion, what matters most in life are not the things you've achieved, but rather it's the person you've become through the years :) It's the journey that makes your life worth living for and not the end product. :) 

haha! It's a good view to spend our time on concidering about it. Yes, the definition of success is not only achieve the goal, but also enjoy the process and get something from it. Enjoy the experience rather than regard it as a burden, which is the value of the real success. ;)