Yes, it will get better if you keep saying it opposed to allowing the negative to get on top of you. Why? Because you become more self confident, and with confidence comes assertiveness, with assertiveness comes outcomes. How do you like that???
Veiled, I don't know if this will help any, because I too know just how much a teenager with attitude can screw with us, got one myself as you know, however... something my MIL said really stand out to me, in that when a child says, "I hate you", you say the opposite, "I love you", and you do this for every negative remark that comes out of their mouth. Why? Because for every negative remark out of them, the negative is generally not the truth, but more the fantasy they want to evolve with their raging hormones. The positive that we return to them, is the truth, being we do love them, we don't hate them, we do value their opinion, etc etc.
My MIL does it with her grand children, and she did it with her own children, and she said it worked wonders when they went through the pubity and adolescent stages... Sure, they still jumped up and down, but she gave them no reason to argue with her, hence they calmed themselves down, found that all they got back was the truth in positive form about how their mother felt, and they soon turn around and apologise, or try to improve their communication with her, etc etc.
I thought it was really just quite interesting, and very clever to use.
We went out today baby shopping all day... got some new clothes for bub, new stroller for boo, new booster seat for bub as boo will go into his current reversible baby / booster seat (either way, both have the rolls royce of car seats)... other bits and pieces, picked bub up from day care, came home, got some take away as I have lots of work to get through, and that is my day in a nutshell.