Did I do the right thing?

That thing about people not changing is crap. Of course people change all the time! As people go through life the years of wisdom and experience shape who they are. I think you did exactly the right thing. You should always be honest about your feelings. Your heart was telling you this friend was no longer good for you. I've known people like thi smyself who think the whole world revolves around them...you can never please them so it's best to let them go, and just remember the good times you shared. Bravo to your courage!