The advantages of being yourself is simple, you will be happy you are not conforming to the norms and you are YOU. Cry or get mad only you know how to release the stress and show who you are when you feel a certain way, and yes some emotions such as happiness are awesome to display and may even bring about more happiness around coworkers. But the disadvantages are people may take certain moods you bring about to their advantage. For example if you’re in a great mood smiling all day, that’s the best chance for someone to ask for part of the day off and they may come up with some lie or even ask you to sign some paperwork knowing you may not want anything to ruin your day-no stress.
People feed off emotions! My personal favorite is to hide the feelings. By keeping your emotions to yourself you are not playing the game of having people feeding on how you feel. In fact you will remain consistent and your employers will know what to expect day in and day out. Additionally if and when you decide to show anger, people will take head of this and not want to be on your bad side, and vice versa if you’re glad they will try harder to impress and make you glad. This can be a more productive way to approach your own emotions. The disadvantages are you may simply not have many friends at work. (But you’re at work, you’re not there to make friends.. it’s a place of business) You might be construed as a bitter Tin(man or woman).
Now remember it’s up to you which path to take but please remember one thing, “There is no crying in Baseball” A League of Their Own 1992 . If in baseball they don’t show emotion and that’s a professional sport, we are business men and women of the corporate world and we should not cry either.