i struggled with this and i'm still struggling.

the 1st thing i did was telling all the people in my life that knew was "the treatment went well and I am expected to live a while so you all can relax. there's no need to call every week and talk about cancer with me. I'm sure we'd all like to return to the fun stuff we typically talk about"

that statement to everyone helped a lot because it stopped being a daily conversation in my life.

the 2nd thing i did was hand it over to God or for if you prefer to fate. my logic was simple, i did everything the doctors said to do to improve my changes. so that means there's no point in worrying, all that could be done was done.

I can't do anything about the future while it is still in the future. so if the cancer is going to return at some date in the future there's no point in letting it occupy my today and my joy for life.

spend your day doing the little things that bring you joy, if you have spare time and money do the big things that bring you joy. I told my husband my goal now is to be on my death bed and say "i should have spent more time cleaning the house". i don't want to push any joy off until "someday" - nope for me, someday is today.

If you enjoy reading faith based books Max Lucado has a book out that is called "Tame Your Thoughts" it's really helping me to let go of the anxiety. You can buy the study guide on amazon and it comes with a code for 6 streaming sessions that deal with the topic of the week and weekly questions to help you get to the root of your thoughts.