Here is what I do, when I get really depressed and or so down that I have severe anxiety and I just don't feel like going on and living.....
maybe this will help some!
First, it's very hard to keep smiling...so, if you can cuddle and talk with your cat or any animal that you have...even a teddy bear would do....
(I don't care what age you are....just go for it...because it DOES save your life..and helps a lot more, than the people who aren't sick know!)
Talk to your cat....tell your pet how much you love them,and snuggle, with pets or if you have a husband, or friend that you can hug, that also helps, and even back rubs and shoulder rubs....
Also, believe it or not, you give yourself a huge hug...tell your self, "I am gonna be alright! If I have gotten sick before, I have gotten well before,and If I have done this many times before, I will keep on persevering! I am not gonna give up on myself!" I learned about the "hug for yourself" from a movie that I saw, with Marlo Thomas in it...I think that she played a mentally ill woman....and in one scene, she gave "her inner child" a hug...but, it was the adult on the outside is what the audience saw!
I have also seen people say that just giving yourself a hug,and really meaning it, is a healthy thing,and a great way to make your self feel loads better! (you can always do this, when nobody is around!) I have personally done this for me...and it actually helped me get more "UMPH!"...I was less sad, less down in the dumps!
I also cuddle, with whom or whatever....and it helps, alot!
I also think that animals have healing ways,,,and your cat or cats may really, really help you alot...so do not despair...reach out....also try to find out if there is a "Wellness" facility or a Cancer group near you, that you could join, or perhaps just a therapy group.....support is something that gives you some "get up and go", so that you don't quit on yourself.....I don't want you to "let things go...." I have been in the deep depressed places....and I wouldn't want you to "go there" trust me!
Let us know, how you are doing, okay?