The following are four aspects key to leadership for SharePoint success:
1) Dedication to the mission - devote the needed time for your mission.
2) Delegate when needed - SharePoint has many aspects so delegating applicable work when needed is key.
3) Be decisive - make those key SharePoint decision when needed and applicable. The SharePoint world moves fast.
4) Communication is critical - use the proper methods of communication be it email, text message, virtual meeting, in-person meeting, social media, etc.