I used to be (cripplingly) like that (it's OCD, btw)
Bf has taught me to have plans.
I get all of my "what ifs" out on paper and we cross them out one by one as we come up with solutions for them, should they come to pass.
Now I trust that since we're so adept at vanquishing the "what ifs" on paper far beforehand, we can certainly do it on the fly (and we have!).
It takes practice. You can do it!
Best of luck, fren :blobcathug: