Nobody decides to become a Mego. It happens in childhood, for a number of different reasons.
Let's look at a few:
Being spoiled. This is the main cause of Mego, and it's not the child's fault. When you are spoiled, you get a false sense of self-importance and a sense of entitlement, which are two of the main symptoms of a disease called narcissistic personality disorder or a Mego maniac.
Being the "favorite," the "golden child," "daddy's little girl," or "momma's little boy." This kind of excessive love (that is more about the parent's needs than the child's), is very destructive to a child. After this kind of childhood experience, the "real world" just never seems to measure up.
Being abandoned and/or neglected. One thing that can cause Mego mania is a strong internal need for attention and love from others. Neglect and abandonment can certainly create that kind of strong internal need.
Extreme physical and/or sexual abuse can also cause Mego mania, although it certainly does not in every case. While many abuse victims end up with extremely low self esteem, some individuals will overcompensate by creating an inflated sense of self-importance and entitlement.
If you're a Mego, you're just too caught up in your own world to really pay attention to anyone else's world. You've probably seen this in some of your relationships, or maybe when you look in the mirror. It's basically a matter of it being all about you, with no focus on the other person.
To overcome Megotism and develop a healthy balance, you have to learn to walk a mile in the other person's shoes. Easier said than done when you're consumed with yourself.
It is good to look honestly at your own weaknesses and shortcomings. You will need to be "brutally honest" here, however if it comes from your Enthoozee honesty comes naturally.
Learn and understand the relationship between love, anger and forgiveness. Love and forgiveness are about letting go, and unhealthy anger is about holding on, all of which are extremely hard from an ego to do. The Mego has a hard time letting go and tends to be angry, so this is an essential part of the process for a Megos deletion.
In summary, you can see here that a Mego maniac or Mego mania can result from either too much or not enough of the right kind of love and attention in childhood. There may be other causes of this problem, but the above gives an overview of some of the basics.