People telling me what to do

I don't deal well with people telling me what to do. Or, scratch that. It's all in the way they tell me.
It's not easy for me to waver in the face of someone who is so definitive in their approach, who acts as though what they believe is the only thing, who doesn't ask me what I might think. Although I'm not the best collaborator, when it comes to something that involves me, I'd like to at least be consulted on some decisions. Or if not consulted, I'd like to have my own suggestions approached with a sense of openness and consideration.
But really, I just hate know-it-alls.