I second the 7 Habits recommendation, it had a great effect on me. I attended a workshop on it when I was mid-career (several years after reading the book). The workshop woke me up. I was literally working three jobs at my employer, and as a result neglecting my roles as husband and father (Write your own eulogy is a humbling exercise). Not long after, I found a less demanding job and restored some balance to my home and family.
I think the “leadership secret” is really contained in the Gospels. Jesus showed us that successful leaders SERVE in HUMILITY. It’s so counter to what people think leadership is. Many think it is cool to be “in charge”, “have subordinates”, and the financial wealth that secular leadership brings. While it does have some rewards, often people don’t see the sleepless nights sweating over the details and impacts of the decisions leaders are trusted with. Real leaders care deeply about “doing the right thing”. This is seen in the Gospels when Jesus struggles with the burden he carries.
I too have read much information on leadership. My top recommendation for books on it are the four Gospels. Thank you Seth for carrying the leadership burdens that you do, in the humble way you do it.