What bias or stereotype are you aware of in yourself? When did you come to this realization and what have you done about it?

Stereotype and bias? 

What is the difference between stereotype and bias?
What bias or stereotype are you aware of in yourself? When did you come to this realization and what have you done about it?
Do you think there is anyway for bias and stereotypes no to exists? How can we teach children at a young age not to develop any biases or stereotypes?