It seems as if the essay's topic is asking you to look at how life's differences keep life interesting. Think of it this way, if everyone were the same (had the same ideologies, wore the same clothes, and did exactly the same things) life would be boring.
A great essay always grabs the attention of the reader. Therefore, you may wish to grab the attention of the reader by creating a life where everything is the same for everyone. For example, the essay could begin like:
Imagine a life like this: everyone must dress in light blue every day. All alarm clocks, all over the world, go off at exactly 6:00 a.m. There is only one channel on television which everyone can watch. Everyone is to exercise in the same way, at the same time. Looking around, everyone exists as mirror images of everyone else. Would you like to live in this world?
The remainder of the essay would point out that the world around us is meant to be different, so that the scenario above does not happen. The ideas brought up in the body of the essay can attest to the positive nature of people having different taste in clothes, music, literature, professions, and other things (in order to show the importance of diversity).
The essay topic is asking you to evaluate the statement that differing points of view make life interesting. Do you agree with that? Or not? The obvious answer would be that you do agree. In that case, you would come up with examples, usually at least three, that show that different points of view add spice to life. You might, for example, talk about how three different people having three different opinions of the same movie can make for a fascinating discussion and perhaps offer everyone participating in it new insights into the movie. People liking different foods could also open you or others up to a new food experience, or different styles of dress could make life more vibrant and interesting. On the other hand, you might adopt the more unusual stance and argue that differing points of view make life less interesting by causing arguing, contention and polarization. For example, it might be that you can't talk about anything meaningful with your family over the holidays because it will turn into a fight. Or perhaps your friends are too divided politically to have a reasonable conversation about their differences. My hunch, however, is that your are safest if you come up with examples that show ways different viewpoints can expand people's horizons and spark new ideas.