Above all
Love. If anything else in life, love. Love truly, love wholly, love deeply. Because isn't that He said to us? I remember someone asked what was the meaning of life in bible class one year. The teacher replied, "To love and be loved." When he say the skeptical looks on our faces, he said simply the easiest answers in life are often the hardest to understand.
So above all, to love and be loved. No envy. No boastfulness. No pride. That's what we needed. That's what we lacked. That's why we are here again.