Hi,
I could really relate to your post. I vividly remember the various times throughout my treatment (Feb 2012-June 2013), when the wheels fell off and I thought, enough is enough, I'm tired of being strong and positive and trying to keep it all together for friends and family. My worst moment was towards the end of radiation treatment and my arm blew up like a zeppelin from lymphodoema and I had to get my favourite ring (that my husband had given me when we were first going out) cut off. Again, a relatively small thing but like you, I felt betrayed by my body, hating how I looked and emotionally spent.
That was almost two years ago and I'm happy to say that things are looking up and getting that portacath out was the first significant step in turning a corner. As Jenny says, hang in there and take it one day at a time, knowing that you will get through this.
I really admire the fact that you have sought help from counselling and support from this blog. These are both very positive steps to take and I wish you well.
Jane