I love getting better and better at things. The process of finding out how an endeavor works, and then moving through limitation and frustration to build skills and knowledge, and being able to operate at ever more challenging levels - I love that.
I can relate to this because I feel like getting better at things requires finding out the process of them and figuring it out, but also failing in the process to better improve yourself. In order to improve, you must first learn from your failures in the past.