It is highly unlikely that one could be both self-effacing and egomaniacal. Self-effacing behavior involves humility and modesty, while egomaniacal behavior is characterized by an overinflated sense of self-importance and a lack of concern for others. These are opposing qualities, and it is not possible for someone to be both at the same time. Therefore, it is not possible to be simultaneously self-effacing and egomaniacal.

In addition, it is important to note that the two behaviors can have very different effects on others. Self-effacing behavior can be seen as endearing and can help build strong relationships with others, while egomaniacal behavior can be off-putting and even alienating. It sends a message to others that the individual is more important than they are and can lead to feelings of resentment. This behavior can also be a sign of insecurity and can be a major obstacle to forming meaningful connections with people.

Finally, it is important to recognize that self-effacing and egomaniacal behavior can have different impacts on a person’s success. Self-effacing behavior can be seen as a sign of humility, which can be beneficial in a wide range of contexts, while egomaniacal behavior can be seen as a sign of arrogance and can actually be a hindrance to achieving success. Therefore, it is impossible to be both self-effacing and egomaniacal and the two behaviors have very different effects on both others and the individual.