Last month, after three years on my league’s Board of Directors — with the last year as president — I stepped down and returned to the ranks of the skating masses. Serving in a leadership position proved to be one of the most difficult but rewarding things I have done during my time in roller derby, and really in my life in general. I learned so much about myself, people, relationships and organizational dynamics — things I will apply to my professional and personal life from here on out. For background: A few years ago, I never would have thought I would be president of anything — I can be shy, introverted, indecisive, and I sometimes lack confidence in my decision-making abilities. But serving…