Upon acquiring workable level of physical fitness along with a healthy mindset, a sense of emotional balance must follow. This is necessary in order to achieve full control of yourself. 

More often than not, people tend to let their emotions make a decision and take a course of action for them. As you might guess, this almost always end up in regret in the long run. Perhaps right now, you might be recalling such an incident. One where you made a decision based solely on how you felt at that time.

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(Take your time to recall that moment)

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Makes you feel kind of stupid right now, doesn't it?

Needless tosay, it is imperative for you to be able to take control of their emotions. Otherwise, you would be a slave to your emotions. And in turn, it will truly be challenging for you to be dedicated to something. Lastly, you could be easily manipulated by it and by others if they are to figure out your emotional triggers. In closing, it can be said that emotional balance is indeed necessary or else you'd continuously have to deal with emotional damage (insert Stephen He right here).