Live life! Apart from being 34 years old, I have experienced love, breakup, death, happiness etc. It's the emotions that I have experienced that I can bring to my music making. I think that is why I really enjoy watching older pianists - there is so much more depth in their piano playing.I also find that reading biographies, researching history, visiting museums and watching movies (good ones) also help by influencing my interpretations on certain pieces.
You have to have loved and lost.