Why are we reluctant to appreciate others?

One of the common complaints or phrases, I use to hear in an unorganized or small organization from employees is “I am not getting appreciation from my colleagues or manager”. In fact, it is not heard in a family environment, but it would be the hidden cause of all the domestic arguments and fights.It is particularly from spouse!

Why we are reluctant to appreciate others when they do even small good work?

The psychological reasons for this reluctance to appreciate others could be
Fear of losing control 
More of self-centered and thinking as if no time for anything else
Taking granted others as they are part of us 
Poor self-esteem or low confidence
Not being in awareness or always busy in something 

This needs self-introspection within us.

One of the studies said that the person needs to be in a positive frame of mind. If one is not in a positive state, he/she cannot able to appreciate others. Hence, appreciation is not for only motivating others, it is a measure of our wellness of mental strength. 

Relook your habit of appreciation of others and frequency, especially the people in your family and the people are working for you. It reflects your mental health.