Keep your priorities right, in terms of tasks and relationships.
Be a problem solver, a leader, not a whiner.
Be realistic about the actual, underlying nature / reality of all interaction. Be fooled you not by the appearance.
From the position of strength, you negotiate.
From the position of the board, you communicate.
Neglect the strategic objectives and big picture at your own risk.
Be distracted you not from the strategic priorities by low-value, assigned tasks.