Over the last coupe of years I've gone through the process of more thoroughly defining my personal core beliefs. Up until this time I've always lived with "adopted" or "hereditary" core beliefs. I used to think I was altering my core beliefs, but I was actually only defining my own. One of the beliefs I'm trying to instill during this process is that I need to be willing to change my core beliefs when there comes a time someone shows me something worth changing for. There's no point in learning if you aren't willing to learn.