Emotional immaturity is defined as the inability of an individual to control their emotions or take full responsibility for their actions. Immature individuals have problems with anger management, insecurities, jealousy, fear, resentment, and guilt. People with immaturity problems often find it difficult to let go of the emotions that they are experiencing. Instead, they remain stuck in negative emotions. In most cases, depression and anxiety are the main reasons behind immaturity. Some of the immature individuals have in the past had complicated relationships with their parents, sibling, or other family members.