The older I get the more and more value I get from one key idea: trust and believe in yourself and abilities because ultimately the person who will gain the most from you being you is you. From that comes peace from the comfort of trusting your instincts and a sincere willingness to respectfully question situations that don't seem quite right while still being able to trust in people who demonstrate competency.
Jim Nill has repeatedly shown himself to be more than competent at his job. His long career in hockey management gave him an impeccable resume when the Dallas Stars hired him, and the job he has done transforming the roster in his tenure as the general manager has been inspiring.