Being Free From Desire. Almost all people are slaves to the pleasures of the world. The only person who is truly a king' is one who is free from desire. Their thoughts are more fixated on obtaining these pleasures than even enjoying them. Seeking pleasure can be an illusory goal, since a pleasure seeker is never truly fulfilled.
Happiness is a much more worthwhile goal, and is obtained by being in control of one's desires.
With unity there is blessing. It is easy to focus on the differences between people and to view yourself as separate from others. Truly no two people are alike. But, there are many common factors among people. By focusing on the fact that every person is created in Hashem's image, we will have greater identification with others, which will lead to greater unity.