Why Do I Act Like a Master Number 11?

I can respond to your question, but not answer directly. The reason is because I don't know your understanding of how Master Number 11 acts. The Master Numbers and Potential article describes my view of master numbers.

Numerology doesn't answer to people's actions. Nor does it compel people to act in a certain way.

What it does is reveal tendencies and likelihoods.

According to the information you provided with your question, your destiny number and your personality number are both the master number 11. However, just because you have a master number in two places doesn't mean you are required to act like it — or be it, or even agree with it. When free will and numerology differ, free will prevails.