I’ve been seeing a counsellor every few months for many years for supervision and just to keep my head safe. Having struggled with breast growth over the last 6 months it was the main topic last time we met. She was very supportive that I’d got up the courage to go and get fitted for a bra and that I had found a strategy that worked for me.
I’ve not tried CBT for this, but I do think that a little talking therapy at an early stage can help stop it becoming too big an issue. It won’t work for everyone, but there’s probably not much to lose by giving it a try if you’ve come to the point of thinking that some outside help would be good. It really is healthy to have a safe space to talk about things that we otherwise hide and to find that there is someone who will be a supportive listener and not condemn you.