Jessica McKellar gives some fantastic career, management, and leadership advice in This Is What Impactful Engineering Leadership Looks Like. The interview goes into detail on three main areas:

“When engineering management is done right, you’re focusing on three big things,” she says. “You’re directly supporting the people on your team; you’re managing execution and coordination across teams; and you’re stepping back to observe and evolve the broader organization and its processes as it grows.” 

Even though the interview is focused primarily on engineering teams, it’s applicable to all types of leadership and management. Highly recommended.