Do you realize you merely changed your behavior, but did not solve your issues?
By the sound of your post you are on your way to becoming the bitter guy people shun. Know the type?
You have emotions, they are a fact of life. If you replace them with anger you just go from emo to being a hater. Not much of an improvement. In fact it either sets you up to being lonely or having rats for friends.
Learn to manage your emotions, so it won't be emo and you won't get bitter.