All great advice. I guess I behave in many of these ways just because of my personality, I've never understood (or liked) people who try to entrench themselves

All great advice. I guess I behave in many of these ways just because of my personality, I've never understood (or liked) people who try to entrench themselves in some position and become irreplaceable, I've never seen how you can think that is a good strategy for yourself, and this article explains some of that.