hi Cyclo, I went through a similar thing one year out .... it might be good to reconnect with the counsellor you were seeing. sometimes the depression hits when we get our all clear it is like the water being let out the bath.... a big sigh but sometimes that sigh is not a positive feeling for us.
you could also give the helpline a call.... helpline on 1800 500 258 and speak with one of the cancer nurses or breast care nurse.
It can be really helpful to talk about what is going on for you.
you are doing so many positive things working exercising eating well and sleeping well.
Hugs
Soldier crab