There is a grieving process that happens when you get a Dx of cancer or like you said, something that you will have to treat for the rest of your life......

Diabetics have to treat their illness for the rest of their life & they have a long life........hope you will be able to see it in that perspective.......know it feels like your body let you down because there wasn't supposed to be anything seriously wrong with our bodies until we get OLD......then we understand because it's the normal aging process......I sure you are experiencing a lot of emotions......& it's OK....it's what every NORMAL person would be feeling right now.

Maybe through the hospital or where you are getting your treatments, you might be able to find a support group.....they seem to have them for everything so I'm sure you will find others who are going through the same thing you are & the sharing might be VERY helpful to know you aren't alone if the feelings you are having.

My prayers are with you