Leonard Sweet wrote a book, 11: Indispensable Relationships You Can’t Be Without. This book is a great resource for leaders, especially leaders in churches and faith based organizations. The summary list is below.
11 Indispensable Relationships by Leonard Sweet
Editor-Nathan
True Friend-Jonathan
Butt-Kicker-Jethro
Protege-Timothy
Encourager-Barnabas
Yoda-Peter/Paul
Back-Coverer-Deborah
Reject-Zacchaeus
Little One-Rhoda
VIP’s-Lydia & Lazarus, Rich & Poor
Jerusalem-A place, the land
Invisible 12th-Holy Spirit