Have you ever felt happy and sad at the same time?

Or have you felt excited about starting a new endeavor but scared of falling flat on your face?

Consider the Comedy and Tragedy masks of the theater. To many, quarreling emotions may feel a lot like those masks look—conflicted.

Stemming from ancient Greek, the idea of "know thyself" is nothing new.

Trending nowadays, however, is a term known as mindfulness. Which is another way to express a lifestyle of existing in the present by being self-aware.