This is a tough question to answer without dipping into platitudes. Try sharing leadership examples instead. Say, "The best way for me to answer that is to give you a few examples of leadership challenges I've faced," and then share situations where you dealt with a problem, motivated a team, worked through a crisis. Explain what you did and that will give the interviewer a great sense of how you lead.
“I’ve heard great things about the work environment here from a few colleagues. And when I saw this job posting, it seemed to match my skills very closely. For example, I saw on the job description that you need somebody who’s an expert in Java programming. This is what I focused on in both of my previous positions, and was even the focus of my academic work before graduating university. I consider myself an expert in Java and it’s a skill I hope to continue specializing in.”

Interview Questions What Is Your Weakness?

"Choose an answer that shows that you can meet a stressful situation head-on in a productive, positive manner and let nothing stop you from accomplishing your goals," says McKee. A great approach is to talk through your go-to stress-reduction tactics (making the world's greatest to-do list, stopping to take 10 deep breaths), and then share an example of a stressful situation you navigated with ease.