Leadership books make my head swim. 

Always good to refresh the mind with Truth from the Ultimate Leadership Book:

You promise to guide the humble in what is right and teach them Your way.  (Ps 25:9)

Help me to do nothing out of selfish ambition or vain conceit but in humility consider others as better than myself. (Phil 2:3)

Help me to clothe myself with compassion, kindness, humility, gentleness, and patience. (Col 3:12)

You are the Lord my God.  I desire to love You, listen to Your voice, and hold fast to You, for You, Lord, are my life. (Deut 30:20)

In Your hand is the life of every creature and the breath of all mankind. (Job 12:10)

Before the mountains were born or You brought forth the earth and the world, from everlasting to everlasting You are God. (Ps 90:1-2)