Whenever you're convinced you can't handle life, insulating and avoiding life challenges is a common, albeit, misguided defense.
This defense is an attempt to insulate you from harm's way. Just as a winter coat insulates you from the cold, the controlling strategy of insulation attempts to create a protective barrier between you and "perceived" danger.
Some very routine everyday experiences can become forms of psychological insulation when driven by insecurity. It's an extensive list that can include emotional detachment (coldness), excessive reading or watching TV, alcohol or substance abuse, passivity, workaholism, anger or hostility, social avoidance or shyness, aloofness, excessive fatigue or sleep, depression, even gaining weight.
Although any of these expressions, when excessive, may be cause for concern, they are rarely seen for what they are--controlling strategies that insulate and excuse you from life.