People lack social skills for various reasons, some more than others. When you have low self-esteem, lack knowledge and don’t believe in your abilities, think someone is better than you, give up on hope, become unbalanced and disturbed, become weary, run to your comfort zone, become unproductive, allow others to dictate your life by degrading you, devaluing you, putting you down, criticizing you and such, you become drained of your strength and energy, irritated or provoked, you tend to become confused, demand someone’s total attention and love to a troubling extent or you lose interest in association.