Managing our emotions is a very difficult task as our emotions are likely to be influenced by others' actions and the circumstances prevailing around us. If mastered, then it can help one to fight against all odds. There are situations where we need to control our emotions for example, in our work culture; we come across all walks of people there, and therefore we may face many moods and emotions related to them.
Expressing our feelings and thoughts makes one self different from others. If there was a day marked only to express what you feel about life, then a single day may not be enough for me whereas few others may convey it in few lines. We can understand our inner expressions and need to careful of it not to be influenced by the outer world.