The most important quality for any leader is the ability to inspire. You don't need to be a CEO, President, VP, or whatever title to inspire the people around you and for them to look to you as a leader.
For me, learning to be the best leader I could be started with understanding what motivated my teams so that I would know exactly how to inspire them to do their best work (see storytelling). Beyond that, learning to be the best leader I could be was about building empathy, trusting those around me, and not getting upset when people failed. Every failure is a chance to learn, and leaders who understand this for their teams are sure to bring out the most growth in their people.
Leadership isn't something I learned once. I'm constantly evolving as a leader. For example, my development as a leader after graduating as been focused heavily on being vehemently anti-racist, uplifting BIPOC voices, and being unapologetic when certain White folks get upset about it.
Every year, I become a stronger leader than I was in the past. As I intend for that to always be the case, I look forward to getting closer and closer to my fullest potential as a leader.