How to Deal With Disagreements in Creative Processes

"If you've never disagreed with the people around you, then I'm incredibly envious of you," she says. "I think that we should be suspicious of creative processes if they don't have disagreement and conflict in them" The answer to what to do will change depending on who exactly it is that you're disagreeing with - a peer or co-collaborator? Is it someone who's technically above you, like your editor? How do you feel the relationship changes how you deal with feedback?