Rational OR/AND Emotional?

It's not uncommon that one gets type casted as a rational person OR an emotional person. In reality, are they mutually exclusive or do they co exist? Is it right to say a person is rational/ emotional person? Or would it be appropriate to say that a person is rational at some points of time/situations and emotional in others??. I think the concept of chemical equilibrium would be of some help in this context.

Let us invoke a constant called K _personality (K_p ). This constant is a measure of both rational and emotional components of a person and it stays more or less constant for a person. At any point in time/situation, our reactions/ behavior are a combination of both the components and K_p tells which of the 2 components is dominating. So the equilibrium condition looks somewhat like this

 

                               [Emotions]

                          K_p =  -----------------

                                       [Reason]

If, K_p < 1, The person's rational component dominates.

If, K_p = 1, The person's rational and emotional components are roughly equal.

If, K_p > 1, The person's emotional component dominates.

In my opinion, K_p is unique to a person. For Eg: If my K_p is 0.5, it implies my rational faculty dominates the emotional faculty. Now what happens if this equilibrium is altered by external factors?? As always, Le chatelier's principle comes into picture.

Scenario 1: If RHS (Emotions) are high under some altered conditions.

Loss of a job, troubled relationship, achievement etc etc can have heightened emotions (happy, sad, anxiety, stress, fear etc depending on the situation). Since the equilibrium is altered, the rational faculty comes into picture to reduce the emotions such that the equilibrium is restored. 
 

• Say I loose a job and troubled by it, then I would say to myself that it's not so hard to get another job and so the situation is not very bad.  
• Say there is lot of jubilation due to an achievement, then I would recall the temporariness of everything in order not to get carried by the happiness.

In such cases, the rational understanding of the world will help to calm down the heightened emotions such that K_p is restored.

Scenario 2: If LHS (Reasons) are high under some altered conditions.

Sometime dwelling too much in the so called “perceived truths of the world”, one can become very numb (Eg: States of Nihilism, agnosticism etc etc). The understanding of the world which initially makes someone comfortably numb, would not be a desirable state to be in for too long. Since the equilibrium is altered, emotions are needed to restore the equilibrium. I would in such cases indulge in activities which brings out emotions of “desirable anxiety” (a risky trek for Eg), Fun and nostalgia (hanging out with friends and going out ) and such things so that K_p is restored.

Probably writing this post itself was an exercise to restore the altered equilibrium for me ;-)