After studying traditional project management, I never felt like I had a good set of tools to lead people.
When I read Lean Software Development by Mary Poppendieck, I discover all kinds of tools for effective leadership.
Of Mary's 22 tools, I especially like these.
1. Seeing Waste
6. Set-based Development
7. Options Thinking
11. Queuing Theory
And one final tip...
Change as Fast as the World Changes
Yesterday's wisdom becomes today's obstacle and tomorrow's folly.