INTRODUCTION "All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love." - Baruch Spinoza The present chapter introduces the key concepts related to the current research. The key concepts are Interpersonal Problems, Adults, Family Environment, Self-concept and Emotional Intelligence. Interpersonal relationship is a reciprocal affiliation in social and emotional interactions between two or more individuals. It is portrayed as the distinctive aspect of human kind for being social. It is necessary for the growth and development of an individual. Harmonious interpersonal relationship signifies that the individual is comfortable and happy in life. Present society with progressive transformations influences lives and interpersonal relationships. Though we are globally interconnected, we keep distance from personal touch with one another. Hence, we are left with emotional imbalances and react in damaging ways that drain the interpersonal relationship. As the result, interpersonal problems occur recurrently in relationship affecting one's feelings, thoughts and behavior. It follows a familiar pattern and damages relationships in family, in spousal relationship, in social and work place settings. It triggers intense suffering and hurt wreaking havoc in the interpersonal relationship. As protecting the ego from hurt, adults use defense mechanisms that are maladaptive leading them to experience,